Chemical Engineering @ UP wiki - User contributions [en]

Process Modelling and Control

2010-12-22T15:13:34Z

AndreC:

{| align="right" border="3" width="330px"
|<center>'''Quick Links'''</center>
|-
|
* [http://web.up.ac.za/sitefiles/guide_to_writing_techreports.pdf Guidelines for editing reports]
|}

Welcome to the Process modelling and control group website. We aim to gather information that will be of interest to students completing their postgraduate course in Control Engineering, but will also interest many other people. Have a look at some of the [[PMC Articles|articles/literature surveys]] done by [[Legendary PMC Members|members of the PMC group]].

==PM&C Lab==
The [[PMC Lab]] page holds information about the laboratory we run on campus. You can also link through to [[lab admin]] for access to administrative functions.
* New lab users can read [[PMC Lab|this]] for more information about the lab and the rigs (including their documentation).
* The set up of new computers and software is discussed [[PMC Lab Users|here]].
* A list of the computers in the PMC labs can be found [[PMC Lab Computers|here]]. (''under construction'')

==Honeywell Lab==
The [[Honeywell lab]] (Engineering II room 2-44) contains 15 computers donated by Honeywell. It is used as the venue for the [[Process Modelling and Control]] group's postgraduate lectures and from time to time for other activities.

==Free Software==
Do you want free alternatives to Matlab, Microsoft Office or Outlook? Yes, you have the choice not to pirate all the software you need for your University work. It's called free software. You may have heard of [http://www.linux.org GNU/Linux], but there is hope for people who still want to run other operating systems.
* Have a look at our [[Open Source]] and [[Free Software]] wiki pages for more information and downloads.
* Using Linux? Know of interesting packages other users might find useful? Add it to Ragnarok's [[Linux Apps|Linux applications page]].

==Licenced Software==
The University of Pretoria has licences for [[Licenced Software]] that are mostly donated by the producing organisations.

==Free Simulator==
We are working on a project to produce a free dynamic simulator for quick and dirty dynamics checks and academic purposes. Here are some pertinent links:
* Our [[Dynamic Simulator]] wiki page has more information on this project.
* The topic has also been discussed on [http://ask.slashdot.org/article.pl?sid=03/10/06/1835217&mode=thread&tid=134&tid=185 slashdot].

Legendary PMC Members

2010-12-22T15:11:28Z

AndreC:

[mailto:david@student.up.ac.za <big>'''David Phillpotts'''</big>]

PC used: ''Sigurd'' (later ''Ymir'' and ''Agnar'') and importantly the famed portable PC ''Tiger''. 
Rig worked on: Re-built The Temperature Rig

Masters Work: Fault Detection and Diagnosis using Kernel Based Techniques applied to a Pilot Distillation Column. Completed in May 2007. He now works in the Measurement and Control division of Mintek in Randburg as an extreme control engineer.

<big>'''Stephen Fourie'''</big>

Masters Title: Advanced Process Monitoring using Wavelets and Non-Linear Principal Component Analysis.

Finished in April 2000. Now working for SASOL - SASTech.

[mailto:carl.sandrock@up.ac.za <big>'''Carl Sandrock'''</big>]

Still at the department, Carl started his studies in the Process Control Laboratories and was jointly responsible (with Lourens du Plessis) for the current Opto-22 based control system in the lab. A significant fraction of the wiring and the Opto box was done by this dynamic duo. Carl and Lourens are also responsible for the convention of using Norse mythology for the computer names in the labs.

Lourens du Plessis Lourens is currently working for Sasol and was jointly responsible (with Carl Sandrock) for the current Opto-22 based control system. His masters project was on the automated startup and shutdown of processes, with an application on a gasifier model.

[mailto:s21045756@tuks.co.za <big>'''Ivan Eggberry'''</big>]

PC used: ''Agnar'' (named) and later ''Alf'' (named) 
Rig worked on: Re-built Tthe Temperature Rig

Ivan completed his masters on Performance Monitoring in 2007. He now works for Sasol at Sastech in Secunda.

<big>'''Jaco Labuschagne'''</big>

PC used: ''Ymir'' 
Rig worked on: Worked on the dramatic recommissioning of the main distillation column.

Jay was a full time student during 2004 and 2005. It is anticipated that he will complete his masters on benchmarking Startup and Shutdown applied to the distillation column in 2008. He works for TWP at Angloa Platinum and various platinum mines.

<big>'''Ruan du Toit'''</big>

PC used: ''Beowulf''

Ruan completed his masters in performance monitoring in 2006. He now works for Fluor in Sunninghill.

<big>'''Ruanne Delport'''</big>

PC used: ''Sigurd''

<big>'''Nkanyezi Mqadi'''</big>

PC used: ''Alvis'' (named)

[mailto:hguidi@tuks.co.za <big>'''Hernan Guidi Figueroa'''</big>]

PC used: ''Alvis''

[mailto:evilgenius@tuks.co.za <big>'''André Campher'''</big>]

PC used: ''Mimir'' 
Masters title: A Systematic Approach to Model Predictive Controller Constraint Handling: Rigorous Geometric Methods.

Replaced the old server, Groa, with Ragnarok. He now works for LONMIN Plc. (Precious Metals Refinery, Brakpan).

Sandbox

2010-08-19T16:29:27Z

AndreC: Savetest

Welcome to the sandbox. You can play around here and learn the basics of [[MediaWiki]] editing.

There are some examples on this page. For a comprehensive manual on using [[MediaWiki]] visit their [http://meta.wikimedia.org/wiki/Help:Contents manual/help page] or our [[Help:Formatting|help page]].

== This is a heading ==

=== This is a sub heading ===

Normal text

''Italic text''

'''Bold text'''

'''''Bold italic text'''''

<big>Big Font</big>

<tt>Typewrither Font</tt>

Bulleted items:
* Level 1
* Level 1
** Level 2
*** Level 3
** Level 2

Numbered items:
# Level 1
# Level 1
## Level 2
### Level 3
## Level 2
# Level 1

Indenting
:A colons (:) indents (''Tab'') a paragraph or line.
::The more you colon the more you indent
:::Until it gets out of hand...
::::Or not... :)

<pre>
The "pre" command preseves formatting and types in a block (very nice for computer code)
</pre>

You can do the same by using a leading space

== About line breaks ==

Merely pressing
enter
does not make
line breaks.

Adding the 
break command 
does.

Double enter

makes paragraph

breaks.

== About links ==

'''Internal links''' 
Code: 
<nowiki>[[Some Wiki Page|My page]]</nowiki>
Results in: 
[[Some Wiki Page|My page]] : Links to the wiki page "Some Wiki Page" and displays "My page" as the link. If the text after the pipe (|) is ommited, then the page name e.g. "Some Wiki Page" will display as the link.

'''External links''' 
Code: 
<nowiki>[http://www.google.com Google]</nowiki>
Results in: 
[http://www.google.com Google] : Links to the external site "<nowiki>http://www.google.com</nowiki>" and displays "Google" as the link. Text after the URL (separated by a space) is handled as plain text for the link. Simply typing an URL e.g. http://www.google.com will shown the full URL as a link.

(happy edit is happy)

----

Happy wiki'ing (by the way, these are lines, use sparingly)

----

Fzg

2010-08-13T11:08:40Z

AndreC: Redirected page to T01 FZG Machine

#REDIRECT [[T01 FZG Machine]]

Standards and Procedures

2010-08-13T11:06:54Z

AndreC:

[[File:Sliding.jpg|500px|right]]

=== ASTM Standards and Specifications ===
Click [ftp://tribology@ragnarok.up.ac.za/Standards%20and%20Specifications/ here] to access the standards.

=== EN Standards and Specifications ===
Click [ftp://tribology@ragnarok.up.ac.za/Standards%20and%20Specifications/EN%20Standards/ here] to access the standards.

=== ISO Standards and Specifications ===
Click [ftp://tribology@ragnarok.up.ac.za/Standards%20and%20Specifications/ISO%20Standards/ here] to access the standards.

=== SABS Standards and Specifications ===
Click [ftp://tribology@ragnarok.up.ac.za/Standards%20and%20Specifications/SABS%20Standards/ here] to access the standards.

Heating experiment

2010-07-30T14:33:44Z

AndreC: typo

This page documents the heating dynamics experiment in the 3rd year labs. It is used as one of the experiments for the Process Dynamics ([[CPN 321]]) component of Laboratory ([[CLB 321]]). This experimental setup is also used for some Thermodynamics experiments. The sections below lists the equipment currently in use, and links to software/manuals concerned with the setup.

== Hardware ==
=== Experimental setup ===
The experimental setup only consists of two thermocouples connected to a PC via temperature transmitters. The rest of the experiment is set up as required (e.g. a kettle is boiled and the temperature measured to determine its dynamics).
=== Instruments/Devices ===
The following instruments and devices are used to the heating dynamics experiment;

{| class="wikitable" border="1" cellpadding="5"
! align="center" style="background:#f0f0f0;"|Instrument/Device
! align="center" style="background:#f0f0f0;"|Signal/Connection
! align="center" style="background:#f0f0f0;"|Notes
|-
| 2x Thermocouples || Connected to temperature transmitters ||
|-
| 2x Temperature transmitters ||Connected via RS-232 (serial) to PC||[ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/manuals/04024.pdf Manual]
|}

== Software ==
The temperature transmitters are connected to the PC using standard RS-232 (serial) connections. Therefore, the connection protocol needs to be manually configured. The default (working) settings for the two units are displayed below. Note that they can be programmed to use different settings (consult the manual for instructions).
* Baud: 9600 bits per second
* Data bits: 8
* Parity: None
* Stop bits: 1
* Flow control: None / Xon Xoff
The units do not supply data in a continuous stream, and needs to be prompted for data. The command to send to a unit to request a reading is;
TA$

Windmill (a free-ware serial communication application) is used for serial communication and data logging. The units are set up using '''ConfIML''' is used to configure the units, their channels and data parsing (see below). '''SetupIML''' is then used to generate an instrument data file, which specifies the names, units and scaling of the channels. Finally, '''Logger''' is used to read data and save it to file.

A point to note is that Windmill does not save the entire data message (received from the unit) to file, it relies on the correct parsing of the message. '''comDebug''' (also a Windmill application) can be used to troubleshoot communication to/from the units. Info obtained from '''comDebug''' identifies the data message received from the units as 14 byte message, with 8 blank bytes, 4 data bytes and 2 trailing bytes for a carriage return and newline. A sufficient parsing string (to be used when setting up the units in '''SetupIML''') is to ignore the first 8 bytes and then extract data until the carriage return. Thus,
\I08\E"\C013"

The software used is available here;
* [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/2010/windmill/windmill.zip Windmill installation files]
* [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/2010/windmill/comDebug.zip comDebug installation files]
* [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/2010/windmill/config%20files/ Pre-configured instrument data files]
* [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/drivers/PCI%20Serial%20Port%20Drivers%20(32bit).zip PCI Serial Port drivers] (just in case)

Since 2010, Matlab is no longer used for this experimental setup. However, the .m code for serial communication for this setup is available [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/pre-2010%20software here].

Heating experiment

2010-07-30T14:33:15Z

AndreC: Created page with 'This page documents the heating dynamics experiment in the 3rd year labs. It is used as one of the experiments for the Process Dynamics (CPN 321) component of Laboratory ([[C...'

This page documents the heating dynamics experiment in the 3rd year labs. It is used as one of the experiments for the Process Dynamics ([[CPN 321]]) component of Laboratory ([[CLB 321]]). This experimental setup is also used for some Thermodynamics experiments. The sections below lists the equipment currently in use, and links to software/manuals concerned with the setup.

== Hardware ==
=== Experimental setup ===
The experimental setup only consists of two thermocouples connected to a PC via temperature transmitters. The rest of the experiment is set up as required (e.g. a kettle is boiled and the temperature measured to determine its dynamics).
=== Instruments/Devices ===
The following instruments and devices are used to the heating dynamics experiment;

{| class="wikitable" border="1" cellpadding="5"
! align="center" style="background:#f0f0f0;"|Instrument/Device
! align="center" style="background:#f0f0f0;"|Signal/Connection
! align="center" style="background:#f0f0f0;"|Notes
|-
| 2x Thermocouples || Connected to temperature transmitters ||
|-
| 2x Temperature transmitters ||Connected via RS-232 (serial) to PC||[ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/manuals/04024.pdf Manual]
|}

== Software ==
The temperature transmitters are connected to the PC using standard RS-232 (serial) connections. Therefore, the connection protocol needs to be manually configured. The default (working) settings for the two units are displayed below. Note that they can be programmed to use different settings (consult the manual for instructions).
* Baud: 9600 bits per second
* Data bits: 8
* Parity: None
* Stop bits: 1
* Flow control: None / Xon Xoff
The units do not supply data in a contiuous stream, and needs to be prompted for data. The command to send to a unit to request a reading is;
TA$

Windmill (a free-ware serial communication application) is used for serial communication and data logging. The units are set up using '''ConfIML''' is used to configure the units, their channels and data parsing (see below). '''SetupIML''' is then used to generate an instrument data file, which specifies the names, units and scaling of the channels. Finally, '''Logger''' is used to read data and save it to file.

A point to note is that Windmill does not save the entire data message (received from the unit) to file, it relies on the correct parsing of the message. '''comDebug''' (also a Windmill application) can be used to troubleshoot communication to/from the units. Info obtained from '''comDebug''' identifies the data message received from the units as 14 byte message, with 8 blank bytes, 4 data bytes and 2 trailing bytes for a carriage return and newline. A sufficient parsing string (to be used when setting up the units in '''SetupIML''') is to ignore the first 8 bytes and then extract data until the carriage return. Thus,
\I08\E"\C013"

The software used is available here;
* [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/2010/windmill/windmill.zip Windmill installation files]
* [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/2010/windmill/comDebug.zip comDebug installation files]
* [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/2010/windmill/config%20files/ Pre-configured instrument data files]
* [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/drivers/PCI%20Serial%20Port%20Drivers%20(32bit).zip PCI Serial Port drivers] (just in case)

Since 2010, Matlab is no longer used for this experimental setup. However, the .m code for serial communication for this setup is available [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/heating_dynamics_experiment/software/pre-2010%20software here].

Flow experiment

2010-07-30T14:01:20Z

AndreC: Created page with 'This page documents the flow experiment in the 3rd year labs. It is used as one of the experiments for the Process Dynamics (CPN 321) component of Laboratory (CLB 321). T...'

This page documents the flow experiment in the 3rd year labs. It is used as one of the experiments for the Process Dynamics ([[CPN 321]]) component of Laboratory ([[CLB 321]]). The sections below lists the equipment currently on the rig, and links to software/manuals concerned with the setup.

== Hardware ==
=== Experimental setup ===
The experiment consists of feed tank, from which water is pumped to two cascading tanks. Water flows, due to gravity, from these tanks (through valves) and finally into a collection tank. Water can then be pumped back from the collection tank to the feed tank.
=== Instruments/Devices ===
The following instruments and devices are fitted onto the flow experiment;

{| class="wikitable" border="1" cellpadding="5"
! align="center" style="background:#f0f0f0;"|Instrument/Device
! align="center" style="background:#f0f0f0;"|Signal/Connection
! align="center" style="background:#f0f0f0;"|Notes
|-
| 2x Pumps || Operated via NI DAQ ||
|-
| 1x Rotameter ||Manual reading||
|-
| rowspan="3" | 3x Pressure transmitters ||rowspan="3"| 4-20mA / Connected to NI DAQ || In top tank; range: 0-1bar, [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/flow_experiment/manuals/35401-EN.PDF Manual]
|-
| In lower tank; range: 0-2.5bar.
|-
| In collection tank; currently not working.
|-
| National Instruments DAQ||USB connection to PC||
|}

== Software ==
The National Instruments DAQ is used to interface to the instruments and to LabView for data-logging. A LabView .vi file is used to operate the experiment. The currently used .vi files as well as previously used files can be found [ftp://ragnarok.up.ac.za/publicftp/3rd_year_lab/flow_experiment/software here].

CLB 321

2010-07-30T13:28:28Z

AndreC: Added multiple links to experimental setups

[[Category:Modules|3rd Year]]

== Scedule ==
{| {{table}}
| align="center" style="background:#f0f0f0;"|'''Day'''
| align="center" style="background:#f0f0f0;"|'''Date'''
| align="center" style="background:#f0f0f0;"|'''1'''
| align="center" style="background:#f0f0f0;"|'''2'''
| align="center" style="background:#f0f0f0;"|'''3'''
| align="center" style="background:#f0f0f0;"|'''4'''
| align="center" style="background:#f0f0f0;"|'''5'''
| align="center" style="background:#f0f0f0;"|'''6'''
| align="center" style="background:#f0f0f0;"|'''7'''
| align="center" style="background:#f0f0f0;"|'''8'''
| align="center" style="background:#f0f0f0;"|'''9'''
| align="center" style="background:#f0f0f0;"|'''10'''
| align="center" style="background:#f0f0f0;"|'''11'''
| align="center" style="background:#f0f0f0;"|'''12'''
| align="center" style="background:#f0f0f0;"|'''13'''
| align="center" style="background:#f0f0f0;"|'''14'''
| align="center" style="background:#f0f0f0;"|'''15'''
| align="center" style="background:#f0f0f0;"|'''16'''
| align="center" style="background:#f0f0f0;"|'''17'''
| align="center" style="background:#f0f0f0;"|'''18'''
| align="center" style="background:#f0f0f0;"|'''19'''
| align="center" style="background:#f0f0f0;"|'''20'''
|-
| Friday||2010/07/30||K||P||D||H||||||||||||||||||||||||||||||||
|-
| Monday||2010/08/02||#||#||#||#||K||P||D||H||||||||||||||||||||||||
|-
| Wednesday||2010/08/04||||||||||#||#||#||#||K||P||D||H||||||||||||||||
|-
| Friday||2010/08/06||||||||||||||||||#||#||#||#||K||P||D||H||||||||
|-
| Tuesday||2010/08/10||*||*||*||*||||||||||||||||||#||#||#||#||K||P||D||H
|-
| Wednesday||2010/08/11||P||D||H||K||*||*||*||*||||||||||||||||||#||#||#||#
|-
| Friday||2010/08/13||#||#||#||#||||||||||*||*||*||*||||||||||||||||
|-
| Monday||2010/08/23||||||||||||||||||P||D||H||K||*||*||*||*||||||||
|-
| Wednesday||2010/08/25||||||||||||||||||#||#||#||#||P||D||H||K||*||*||*||*
|-
| Friday||2010/08/27||*||*||*||*||||||||||||||||||#||#||#||#||P||D||H||K
|-
| Monday||2010/08/30||||||||||P||D||H||K||||||||||||||||||#||#||#||#
|-
| Wednesday||2010/09/01||D||H||K||P||#||#||#||#||*||*||*||*||||||||||||||||
|-
| Friday||2010/09/03||#||#||#||#||||||||||D||H||K||P||*||*||*||*||||||||
|-
| Monday||2010/09/06||||||||||||||||||#||#||#||#||D||H||K||P||*||*||*||*
|-
| Friday||2010/09/10||*||*||*||*||*||*||*||*||||||||||#||#||#||#||D||H||K||P
|-
| Monday||2010/09/13||||||||||D||H||K||P||*||*||*||*||||||||||#||#||#||#
|-
| Wednesday||2010/09/15||H||K||P||D||#||#||#||#||||||||||||||||||||||||
|-
| Friday||2010/09/17||#||#||#||#||||||||||H||K||P||D||*||*||*||*||||||||
|-
| Monday||2010/09/20||||||||||||||||||#||#||#||#||||||||||*||*||*||*
|-
| Wednesday||2010/09/22||||||||||*||*||*||*||||||||||H||K||P||D||||||||
|-
| Thursday||2010/09/23||*||*||*||*||||||||||||||||||#||#||#||#||||||||
|-
| Monday||2010/10/11||||||||||||||||||*||*||*||*||||||||||H||K||P||D
|-
| Wednesday||2010/10/13||||||||||H||K||P||D||||||||||*||*||*||*||#||#||#||#
|-
| Friday||2010/10/15||||||||||#||#||#||#||||||||||||||||||||||||
|-
| Monday||2010/10/18||||||||||||||||||||||||||||||||||*||*||*||*
|-
| Wednesday||2010/10/20||||||||||||||||||||||||||||||||||||||||
|-
| Friday||2010/10/22||||||||||*||*||*||*||||||||||||||||||||||||
|-
| Monday||2010/10/25||||||||||||||||||||||||||||||||||||||||
|-
| Wednesday||2010/10/27||||||||||||||||||||||||||||||||||||||||
|-
| Friday||2010/10/29||%||%||%||%||||||||||%||%||%||%||%||%||%||%||%||%||%||%
|-
| Monday||2010/11/01||||||||||%||%||%||%||||||||||||||||||||||||
|-
| Wednesday||2010/11/03||||||||||||||||||||||||||||||||||||||||
|-
| Thursday||2010/11/04||||||||||||||||||||||||||||||||||||||||
|-
|
|}

{| {{table}}
| align="center" style="background:#f0f0f0;"|'''Symbol'''
| align="center" style="background:#f0f0f0;"|'''Meaning'''
|-
| K||Kinetics: Prof Nicol
|-
| P||Piping: Me du Toit
|-
| D||Dynamics: Prof de Vaal
|-
| H||Heat Transfer: Dr Labuschagne
|-
| #||Discussion
|-
| *||Report
|-
| %||Re-submission
|-
|
|}

== Experimental setups ==
The figure below shows the layout of the 3rd year lab. Hover over a bench to see its description and click on a bench to go to the page of that specific setup.
<imagemap>
Image:LabLayout.png|center
rect 0 30 135 90 [[Cooling bath|Sample cooling bath]]
rect 0 110 135 175 [[Sonic flow experiment|Sonic flow experiment]]
rect 0 200 135 260 [[Piping systems experiment|Piping systems experiment]]
rect 0 285 135 345 [[Density experiment|Density experiment]]
rect 0 370 135 430 [[Flow experiment|Dynamics flow experiment]]
rect 170 5 235 140 [[Heating experiment|Dynamics heating/cooling experiment]]
rect 170 230 235 365 [[Reactor experiment A|Reactor experiment A]]
rect 265 270 400 345 [[Reactor experiment B|Reactor experiment B]]
rect 265 200 400 260 [[Heat exchanger experiment|Heat exchanger experiment]]
rect 265 110 400 175 [[CLB_321|Bench not currently used]]
</imagemap>

File:LabLayout.png

2010-07-30T12:49:46Z

AndreC: Layout of the 3rd year labs. Benches are shown as well as North (for orientation).

Layout of the 3rd year labs. Benches are shown as well as North (for orientation).

Opto 22

2010-07-28T09:04:39Z

AndreC: fixed link

{| align="right" border="3" width="250px"
|<center>'''Quick Links'''</center>
* [[Opto Troubleshooting]]
* [http://ragnarok/programdownloads/Opto22/1112_SNAP_Ethernet_Brain_Users_Guide.pdf Opto Brain manual]
* [http://ragnarok/programdownloads/Opto22/ Opto documentation archive]
|}
==Opto==

'''OpTo''' is how we send/receive information from the rigs.

In the PM&C laboratory, all [[Analog to Digital Conversion|analog to digital conversion]] is handled by the OPTO22 units in the central box in the laboratory. The control units for each group of AD modules is known as a Brain, and is connected to the network so that all the computers on the local network (and maybe even the Internet in the future) are able to access the values of the readings and write outputs to the [[PMC Lab|rigs]].

=== Opto Setup ===

To start using the Opto, follow the following procedure:

1) Switch on transmitters. There are electrical plugs at the rigs that need to be switched on. Be careful not to switch on a pump by accident!

2) Switch on power supply units in the Opto JB.

3) Check LEDs on the Opto brain to see if there are any errors. LED meanings are described in [http://ragnarok/programdownloads/Opto22/1112_SNAP_Ethernet_Brain_Users_Guide.pdf SNAP Ethernet Brain Users Guide]. If you do come up with an issue and manage to fix it please document it here.

4) Check that your SNAP modules are snaped into the system. Idealy they should be connected and configured but they are most probably not.

5) Check connectivity with the Brain by opening the command promt (Start->run->cmd) and pinging the brain (e.g. "ping OPTO2"). If you can't ping the brain, check that you are on the same subnet (see [[Finding your IP address]]) and see if the first three bytes are the same as the Opto. Your IP should be 137.215.117.xxx) If this doesn't work contact your Network Administrator.

6) Configure the SNAP modules. Run Start->All Programs->Opto 22->SNAP Ethernet IO Configurator. see one of the existing configuration files as an example. I have found that the configuration fails in some cases if you don't configure all the attached SNAP modules, the workaround here is to pull out everyone else's SNAP modules. Ideally all the SNAPs should be connected and there should be one master configuration file for each Opto brain and then you are only responsible for setting up the scaling in the file. I cannot figure out how the scaling works, if you figure it out please document it here. I used default scaling and converted the mA signal to engineering units in my application.

Opto provides a C API to code your own Opto interface applications. Included with this is an example application (\\freki\C$:\Opto22\OptoENET-IO\DriverToolkit\Examples\C++\VC6\Eiocon\Release\eiocon.exe) that you can use to easily test communication with the brain and easily writing manual data to the rig. Run the application from the command prompt with the Opto brain's ip as an argument (Start->run->cmd)
cd C:\Opto22\OptoENET-IO\DriverToolkit\Examples\C++\VC6\Eiocon\Release
eiocon.exe 137.215.117.238
Type '''help''' to see a list of available commands. Consult [http://ragnarok/programdownloads/Opto22/1112_SNAP_Ethernet_Brain_Users_Guide.pdf this] for information regarding the point numbers.

=== Matlab ===

A Simulink example shows how to access a rig through Matlab. Basically you need an <tt>opto22.m</tt> file in the appropriate Matlab directory refering to the point number on the opto. Before your PC will communicate through the LAN you need to run the opto22 service. Start by coping the .dll from [http://ragnarok.up.ac.za/programdownloads/Matlab/DirectoptoDLL/MatLabOpto.dll here] (right click and save as...) to <tt>c:\windows\system32</tt>. Then run <tt>cmd</tt> and start the service with
<pre>
regsvr32 MatLabOpto
</pre>
You will get a success message.

----
==Real Time vs Simulation Time==

You also need the [http://ragnarok.up.ac.za/programdownloads/Matlab/Rtclock/rtclock.dll <tt>rtclock.dll</tt>] and [http://ragnarok.up.ac.za/programdownloads/Matlab/Rtclock/rtc.mdl <tt>rtc.mdl</tt>] files to keep everything synchronised. Make sure that you also have [http://ragnarok.up.ac.za/programdownloads/Matlab/Rtclock/rtclock.c <tt>rtclock.c</tt>]. If you have trouble with this procedure, follow any one of the three methods below to synchronize real time with simulation time.

Matlab has a separate product called "Real-Time Workshop" to synchronize real time with simulation time. The Real-Time Workshop can create stand-alone executable files which will run in real-time when under a Real-Time Operating System/embedded system. For more on this product, please see:  http://www.mathworks.com/products/rtw/.   It is also possible to turn you own PC into a Real-Time Operating System, with the Real-Time Windows Target. For more information about this product, please have a look at the following URL:  http://www.mathworks.com/products/rtwt/.

  If you are only interested in slowing your model down within Simulink to view results, please see the following:  

There are three example folders in the attached [ftp://ragnarok.up.ac.za/publicftp/lab/Matlab/examples.zip zip file].

===Example 1===

An example of a MATLAB function which goes into a "busy wait" loop which kills time to slow down the simulation until the real-time clock catches up to the Simulink clock:
* Open the folder example1  .
* Run the model rtc.mdl.

===Example 2===

An example of a C-MEX S-function that compares simulation time with the system clock time to slow down the simulation speed:  
* Open the folder example2  .
* Execute the command:
<pre>
 MEX sfun_time.c   (In the MATLAB command-line).
</pre>
* Run the model rtc_C.

===Example 3===

 A MEX-file which syncs a simulation to the PC internal clock or the UNIX system clock. This is an older example the was created for Simulink 1.3c:
* Open the folder example 3.
* Execute the command :
<pre>
CMEX rtclock.c ( in MATLAB 4.x) (In the MATLAB command-line).
 MEX rtclock.c ( in MATLAB 5.x and above)  (In the MATLAB command-line).
</pre>
* Run the M-File rtc.m to create a new model with a "Real-time clock" block created from the C-file above.  

In all of these examples the sine function acts as "simulation". The other simulation can just be dragged into the system where you want to synchronize.

Please note that all of the above examples will allow the system will run approximately Real-Time, but not exactly. If you need the simulation to run in exact Real-Time, please look at the Real-Time Workshop along with a Real-Time Operating System.
----

User talk:AndreC

2010-07-27T08:47:47Z

AndreC: more pruning

__FORCETOC__
== SAIChE Postgraduate Student Symposium Abstract ==

Abstract for Masters project up for discussion/comments. 
Current word count: 256 [250 max]



<center>'''<big>Systematic Model Predictive Controller Constraint Handling: Rigorous Geometric Methods</big>'''</center> 
<center>André H. Campher and Carl Sandrock 
''Department of Chemical Engineering, University of Pretoria''</center>

The models used by model predictive controllers (MPCs) to predict future outcomes are usually unconstrained forms like impulse response-, response- or discrete state space models. Certain MPC algorithms allow constraints to be imposed on the inputs or outputs of a system; but, as they are not coupled with the process model and checked for consistency, infeasible constraints can be specified. Methods for handling constraints in a consistent manner, taking into account their interdependence and disambiguating the language used to specify constraints, would therefore be an attractive addition to any MPC package.

A rigorous and systematic approach to constraint management has been developed, building on the work of Georgakis and others in interpreting constraint interactions. The method supports linear and non-linear (polynomial) steady-state systems, and provides an interface where the following information can be obtained;
* effects of constraint changes on the corresponding input/output constraints,
* feasibility checks for constraints,
* constraint-type information,
* specification of constraint-set size and
* optimal fitting of constraints within the desirable input/output space.
Mathematical rigour and unambiguous language for identifying constraint types were key design criteria. Ample feedback to the user was added to provide a supportive rather than prescriptive environment.

It was ensured that the outputs of the program were compatible with commercial MPC packages, such as Honeywell’s RMPCT® and AspenTech’s DMCPlus®. These packages were used in conjunction with the developed software to test functionality and performance of the method. The method was applied to case studies from Anglo Platinum, the Tennessee Eastman sample problem and laboratory scale test rigs.

User talk:AndreC

2010-07-21T17:19:21Z

AndreC: pruning

__FORCETOC__
== SAIChE Postgraduate Student Symposium Abstract ==

Abstract for Masters project up for discussion/comments. 
Current word count: 266 [250 max]



<center>'''<big>Systematic Multivariable Predictive Controller Constraint Handling: Rigorous Geometric Methods</big>'''</center> 
<center>André H. Campher and Carl Sandrock 
''Department of Chemical Engineering, University of Pretoria''</center>

The models used by model predictive controllers (MPCs) to predict future outcomes are usually unconstrained forms like impulse response-, response- or discrete state space models. Certain MPC algorithms allow constraints to be imposed on the inputs or outputs of a system; but, as they are not coupled with the process model and checked for consistency, infeasible constraints can be specified. Methods for handling constraints in a consistent manner, taking into account their interdependence and disambiguating the language used to specify constraints, would therefore be an attractive addition to any MPC package.

A rigorous and systematic approach to constraint management has been developed, building on the work of Georgakis and others (for instance, Vinson & Georgakis, 2000) in interpreting constraint interactions. The method supports linear and non-linear (polynomial) steady-state systems, and provides an interface where the following actions can be taken and information obtained;
* effects of constraint changes on the corresponding input/output constraints,
* feasibility checks for constraints,
* constraint-type information,
* specification of constraint-set size and
* optimal fitting of constraints within the desirable input/output space.
Mathematical rigour and unambiguous language for identifying constraint types were key design criteria. Ample feedback to the user was added to provide a supportive rather than prescriptive environment.

It was ensured that the outputs of the program were compatible with commercial MPC packages, such as Honeywell’s RMPCT® and AspenTech’s DMCPlus®. The aforementioned packages were used in conjunction with the developed software to test functionality and performance of the method. The method was applied to case studies from Anglo Platinum, the Tennessee Eastman sample problem and laboratory scale test rigs.

User:AndreC

2010-07-20T16:26:02Z

AndreC:

<big>André Campher</big>
* MEng (Control) student
* Self-proclaimed server admin
* Tutor: CPN 321, CLB 321 (Process Dynamics)

'''Contact details:'''
<pre>
Office: Process Modelling and Control Labs, Eng.II 2-62
(back of third-year labs, past the distillation column)
Email: ahcampher@tuks.co.za
Tel.(Lab): 012 420 2675
</pre>

Check my [[User_talk:AndreC|talk/discussion]] page for any current issues.

User:AndreC

2010-07-20T16:25:15Z

AndreC: Created page with '<big>André Campher</big> * MEng (Control) student * Self-proclaimed server admin * Tutor: CPN 321, CLB 321 (Process Dynamics) '''Contact details:''' <pre> Office: Process Model...'

User talk:AndreC

2010-07-20T16:13:13Z

AndreC: SAIChE abstract

== SAIChE Postgraduate Student Symposium Abstract ==

Abstract for Masters project up for discussion/comments.

<center>'''<big>A Systematic Approach to Multivariable Predictive Controller Constraint Handling: Rigorous Geometric Methods</big>'''</center> 
<center>André H. Campher and Carl Sandrock 
''Department of Chemical Engineering, University of Pretoria''</center>

The models used in multivariable predictive controllers (MPCs) are, typically, mathematically unconstrained. Certain MPC algorithms allow constraints to be imposed on the inputs or outputs of a system, but do so in a manner that is decoupled from the process model. This ad hoc specification can lead to infeasible and unrealistic constraints being specified for controllers. A method to determine and handle input/output constraints, taking their inherent interdependence into account, would therefore be an attractive addition to commercial MPC packages.

A rigorous and systematic approach to constraint management was developed, using the operability index (Vinson & Georgakis, 2000) as the basis for the design. The method supports linear and non-linear (polynomial) steady-state systems, and provides an interactive interface where the following actions can be taken and information obtained;
* effects of constraint changes on the corresponding and other input/output constraints,
* feasibility checks for given constraints,
* constraint type information,
* specification of constraint-set size (number of constraints to use) and
* optimal fitting of output constraints within the desirable output space.
Focus was placed on making the method rigorous with regards to the use of the process model and the clear distinction between constraint types. Ample feedback to the user was added to the interface to increase interactivity.

It was ensured that the outputs of the program were compatible with commercial MPC packages, such as Honeywell’s RMPCT® and AspenTech’s DMCPlus®. The aforementioned packages were used in conjunction with the developed software to test functionality and performance of the method. The method was applied to case studies from Anglo Platinum, the Tennessee Eastman sample problem and laboratory scale test rigs.

Help:Uploading

2010-06-29T12:12:29Z

AndreC: External images

When creating a wiki page for information and file sharing, the upload of files and images are important. In this context "files" refer to files that are not explicitly displayed on the wiki, for instance [ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf this pdf file]. "Images" refer to pictures and graphs shown on the wiki pages, for example the logo panel on the [[Main Page]] and the photo on the [[pH rig]] page.

== Images ==
Uploading and using images on the wiki is a simple procedure using only the web browser.
===Uploading===
* Click the [[Special:Upload|Upload file]] link on the left (below Toolbox). You must be [[Special:UserLogin|logged in]] to upload.
* Click Browse to select the image to upload (permitted file types: png, gif, jpg, jpeg)
* Fill in a filename (important) and description and click Upload file.

===Inserting in pages===
Using the filename as entered when uploading the image, one of the following forms can be used to display the image;
* '''<nowiki>[[File:File.jpg]]</nowiki>''' to use the full version of the file
* '''<nowiki>[[File:File.png|200px|thumb|left|alt text]]</nowiki>''' to use a 200 pixel wide rendition in a box in the left margin with 'alt text' as description
The [http://www.mediawiki.org/wiki/Help:Images Mediawiki] image help page can be consulted for more explanations and options when using images.

=== External images ===
The wiki also supports external images (i.e. images not uploaded using the [[Special:Upload|Upload file]] link). There are some issues which needs to be noted when using this feature;
* External, used here, refers only to sites on the UP network - the server does not have proxy access.
* At present, only the http protocol is supported. Public ftp files can be accessed (using http) with the following link: http://ragnarok.up.ac.za/ftp/
* Using image commands (e.g. thumbnailing and resizing) is not possible as these commands are performed by the wiki only on files which have been uploaded to it. In short, a large image will be displayed in its original size.
* Usage: simply use the url of the image, e.g. '''<nowiki>http://web.up.ac.za/images/UP_centenary_logo.jpg</nowiki>'''
== Files ==
===Uploading===
Uploading files to the wiki requires an [http://en.wikipedia.org/wiki/FTP_clients ftp client] (Windows Explorer also works). Most ftp clients have a GUI making file uploading very similar to file management in a file manager such as Windows Explorer or Nautilus. Anonymous access to the ftp or simply ftp://ragnarok/publicftp (type this in the Windows Explorer address bar) allows for file uploading in the ''publicftp'' directory (or its subdirectories).
===Linking to files===
Once uploaded, the files can be linked to in a page using standard external links (as explained in the [[Help:Formatting#Links|formatting/links help page]]). As an example, the Ubuntu Pocket Guide can be linked to using;
<nowiki>[ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf Ubuntu Pocket Guide]</nowiki>
which generates this;
[ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf Ubuntu Pocket Guide]

[[Category:Help|Formatting]]

Level and flow

2010-06-23T08:56:52Z

AndreC: Redirected page to Level and Flow

#REDIRECT[[Level and Flow]]

Main Page

2010-05-31T19:23:03Z

AndreC: News update

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/05/31''': Ragnarok's OS has been upgraded to Ubuntu 10.04 LTS (Lucid Lynx). A php downgrade was necessary to get the wiki running, so please report any problems to [mailto:ahcampher@tuks.co.za André].
* '''2010/05/27''': Ragnarok's OS has been upgraded to Ubuntu 9.10 (Karmic Koala). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/26''': Ragnarok's OS has been upgraded to Ubuntu 9.04 (Jaunty Jackalope). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/16''': The wiki's sidebar has been updated. Unused links have been removed and a section to show persistent links added. Contact [mailto:carl.sandrock@up.ac.za Carl] or [mailto:ahcampher@tuks.co.za André] if you need a link added to the sidebar.

''([[News (old)|Older news]])''

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Calculating the [[UP student number checksum]].
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]
* [[Fluoro-materials Science]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

News (old)

2010-05-31T19:21:13Z

AndreC:

Old news updates are moved to this page and sorted by year.

==2010==
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.

==2009==
* '''2009/10/29''': The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
* '''2009/04/05''': Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

Main Page

2010-05-31T18:50:15Z

AndreC: /* News */

{| align="right" border="3" width="380px" style="color:Red"
|<center>'''Server Downtime'''</center>
|-
|style="color:black" |The server will be down from '''Monday 31 May (17:00)''' to '''Tuesday 1 June (08:00)''' for a final OS upgrade. Please contact André (ahcampher@tuks.co.za) if this poses a problem.

Admin.
|}

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/05/27''': Ragnarok's OS has been upgraded to Ubuntu 9.10 (Karmic Koala). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/26''': Ragnarok's OS has been upgraded to Ubuntu 9.04 (Jaunty Jackalope). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/16''': The wiki's sidebar has been updated. Unused links have been removed and a section to show persistent links added. Contact [mailto:carl.sandrock@up.ac.za Carl] or [mailto:ahcampher@tuks.co.za André] if you need a link added to the sidebar.

''([[News (old)|Older news]])''

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Calculating the [[UP student number checksum]].
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]
* [[Fluoro-materials Science]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Common Matlab/Octave errors

2010-05-28T09:27:43Z

AndreC: /* Using fsolve */ (incomplete sentence)

== Common Matlab/Octave errors ==
=== Function outputs ===
Remember that when you define a function with an output:
function thisout = functionname (thisin)
you have to give the output (<tt>thisout</tt>) a value. Results of calculations stay
within functions unless they are explicitly set to an output.

=== Undefined variables ===
By default, variables are private to the functions in which they are used. Therefore, if you want
to use a variable within a function, pass it as an input. If you want to use a variable outside of a
function, set it as an output.

=== Size of derivative vectors ===
The following error,
<pre>
error: lsode: evaluation of user-supplied function failed
error: lsode: inconsistent sizes for state and derivative vectors
</pre>
can be caused by two problems - the most likely being a mismatch between your system differentials'
output size and the starting value vector size, when calling <tt>lsode</tt>. Make sure that there is
a starting value for each of the states for which your system function calculates a derivative.

The second case is when you have a derivative output which (for some obscure reason) grows in size
(dimensions).

=== Strange size errors ===
A very common error that can be hard to track down is shown below:
<pre>
octave> a = [1 -(1+2); 3]
error: number of columns must match (1 != 2)
</pre>

The problem is that Octave is interpreting the - as a negation (making it negative) rather than a subtraction, so there are actually two elements in the first row. The best way to avoid this problem is to use spaces on both sides of + and - signs at all times.

=== Plotting problems ===
Most common plotting problem: you plot but "nothing happens". The plot window appears but is blank. You are very probably plotting scalar values instead of vectors. Check this by repeating the plot using a more visible marker style like
<pre>
plot(x, y, 's') % squares
</pre>
If you see a single dot, you have forgotten to add elements to your vectors.

A common plotting pattern is
<pre>
x = []
for i = 1:10
newx = f(); % newx is calculated somehow
x = [x newx]; % add element to vector
end
plot(x)
</pre>
The single dot plot means you have probably forgotten to add elements to the vector, so the code looks like
<pre>
x = newx
</pre>

=== Using fsolve ===
fsolve is a numeric root finding routine. If fsolve is not working for you, you probably have one of the following problems:

# Mistake in equations. If you can, work out the root manually and substitute the root into your function. If it does not evaluate to zero, the equation may be wrong.
# Wrong initial guess. The results that you obtain are highly dependant on your initial guess, so if the solver fails to converge consider changing the starting value.

Main Page

2010-05-28T09:24:23Z

AndreC: Server downtime notice (OS upgrade)

{| align="right" border="3" width="380px" style="color:Red"
|<center>'''Server Downtime'''</center>
|-
|style="color:black" |The server will be down from '''Monday 31 May (17:00)''' to '''Tuesday 1 June (08:00)''' for a final OS upgrade. Please contact André (ahcampher@tuks.co.za) if this poses a problem.

Admin.
|}

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/05/27''': Ragnarok's OS has been upgraded to Ubuntu 9.10 (Karmic Koala). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/26''': Ragnarok's OS has been upgraded to Ubuntu 9.04 (Jaunty Jackalope). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/16''': The wiki's sidebar has been updated. Unused links have been removed and a section to show persistent links added. Contact [mailto:carl.sandrock@up.ac.za Carl] or [mailto:ahcampher@tuks.co.za André] if you need a link added to the sidebar.
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.

''([[News (old)|Older news]])''

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Calculating the [[UP student number checksum]].
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]
* [[Fluoro-materials Science]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Main Page

2010-05-27T17:52:25Z

AndreC: /* News */ OS update

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/05/27''': Ragnarok's OS has been upgraded to Ubuntu 9.10 (Karmic Koala). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/26''': Ragnarok's OS has been upgraded to Ubuntu 9.04 (Jaunty Jackalope). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/16''': The wiki's sidebar has been updated. Unused links have been removed and a section to show persistent links added. Contact [mailto:carl.sandrock@up.ac.za Carl] or [mailto:ahcampher@tuks.co.za André] if you need a link added to the sidebar.
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.

''([[News (old)|Older news]])''

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Calculating the [[UP student number checksum]].
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]
* [[Fluoro-materials Science]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Process Modelling and Control

2010-03-26T06:27:53Z

AndreC: Quick links

{| align="right" border="3" width="330px"
|<center>'''Quick Links'''</center>
|-
|
* [http://web.up.ac.za/sitefiles/guide_to_writing_techreports.pdf Guidelines for editing reports]
|}

Welcome to the Process modelling and control group website. We aim to gather information that will be of interest to students completing their postgraduate course in Control Engineering, but will also interest many other people. Have a look at some of the [[PMC Articles|articles/literature surveys]] done by members of the PMC group.

==PM&C Lab==
The [[PMC Lab]] page holds information about the laboratory we run on campus. You can also link through to [[lab admin]] for access to administrative functions.
* New lab users can read [[PMC Lab|this]] for more information about the lab and the rigs (including their documentation).
* The set up of new computers and software is discussed [[PMC Lab Users|here]].
* A list of the computers in the PMC labs can be found [[PMC Lab Computers|here]]. (''under construction'')

==Free Software==
Do you want free alternatives to Matlab, Microsoft Office or Outlook? Yes, you have the choice not to pirate all the software you need for your University work. It's called free software. You may have heard of [http://www.linux.org GNU/Linux], but there is hope for people who still want to run other operating systems.
* Have a look at our [[Open Source]] and [[Free Software]] wiki pages for more information and downloads.
* Using Linux? Know of interesting packages other users might find useful? Add it to Ragnarok's [[Linux Apps|Linux applications page]].

==Licenced Software==
The University of Pretoria has licences for some software used in the "Real World". Have a look at our [[Licenced Software]] wiki pages for more information.

==Free Simulator==
We are working on a project to produce a free dynamic simulator for quick and dirty dynamics checks and academic purposes. Here are some pertinent links:
* Our [[Dynamic Simulator]] wiki page has more information on this project.
* The topic has also been discussed on [http://ask.slashdot.org/article.pl?sid=03/10/06/1835217&mode=thread&tid=134&tid=185 slashdot].

Main Page

2010-03-26T05:38:38Z

AndreC: Old news link

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/03/26''': Ragnarok's OS has been upgraded to Ubuntu 9.04 (Jaunty Jackalope). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/16''': The wiki's sidebar has been updated. Unused links have been removed and a section to show persistent links added. Contact [mailto:carl.sandrock@up.ac.za Carl] or [mailto:ahcampher@tuks.co.za André] if you need a link added to the sidebar.
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.
* '''2009/10/29''': The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
''([[News (old)|Older news]])''
==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Calculating the [[UP student number checksum]].
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]
* [[Fluoro-materials Science]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Main Page

2010-03-26T05:36:59Z

AndreC: News update - OS

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/03/26''': Ragnarok's OS has been upgraded to Ubuntu 9.04 (Jaunty Jackalope). Services have been checked, but if a problem persists please report it to [mailto:ahcampher@tuks.co.za André].
* '''2010/03/16''': The wiki's sidebar has been updated. Unused links have been removed and a section to show persistent links added. Contact [mailto:carl.sandrock@up.ac.za Carl] or [mailto:ahcampher@tuks.co.za André] if you need a link added to the sidebar.
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.
* '''2009/10/29''': The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Calculating the [[UP student number checksum]].
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]
* [[Fluoro-materials Science]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Old news

2010-03-26T05:33:11Z

AndreC: Redirected page to News (old)

#REDIRECT [[News (old)]]

News (old)

2010-03-26T05:32:14Z

AndreC: Old news page

Old news updates are moved to this page and sorted by year.

==2009==
* '''2009/04/05''': Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

Main Page

2010-03-23T12:33:59Z

AndreC: Server downtime notice (removed)

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/03/16''': The wiki's sidebar has been updated. Unused links have been removed and a section to show persistent links added. Contact [mailto:carl.sandrock@up.ac.za Carl] or [mailto:ahcampher@tuks.co.za André] if you need a link added to the sidebar.
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.
* '''2009/10/29''': The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
* '''2009/04/05''': Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Calculating the [[UP student number checksum]].
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]
* [[Fluoro-materials Science]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Main Page

2010-03-17T09:27:18Z

AndreC: Server downtime notice

{| align="right" border="3" width="330px" style="color:Red"
|<center>'''Server Downtime'''</center>
|-
|style="color:black" |Ragnarok will be down for maintenance on '''Monday 22 Feb (08:00 - 16:00)'''. During this time, all server services might not be available. Please contact [mailto:ahcampher@tuks.co.za André] if this poses a problem.

Admin
|}
Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/03/16''': The wiki's sidebar has been updated. Unused links have been removed and a section to show persistent links added. Contact [mailto:carl.sandrock@up.ac.za Carl] or [mailto:ahcampher@tuks.co.za André] if you need a link added to the sidebar.
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.
* '''2009/10/29''': The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
* '''2009/04/05''': Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Calculating the [[UP student number checksum]].
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]
* [[Fluoro-materials Science]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

PMC Lab Users

2010-03-10T10:05:11Z

AndreC: /* Internet access */

This page contains information that new users to the PM&C labs will find useful. The set up of internet access, computers, etc. are discussed in the sections below. For more information about the rigs and equipment in the lab see [[PMC Lab|this page]].

Information about using the PMC lab printer can be found [[Lab Printer|here]].
__FORCETOC__
== New computers ==

New computers have to be registered on the network. Technically, their NIC (Network Interface Card)s have to be registered. Send an email to [mailto:help@it.up.ac.za help@it.up.ac.za] and ask them to register a domain name. You could also phone them on x3051 (search for it on the [http://mx1.up.ac.za/ldap directory service]). If you phone remember to speak slowly and spell any complicated words like "acetone" or "dist" or "temperature".

The information you need to include is:
* A Name - We use names from [[Norse Mythology]].
* Your MAC address - Get this by running Start|run|cmd and typing ipconfig /all. This is the value after "Physical Address". Avoid registering by using the NIC from the previous computer (you will have to stick with the name though).
* Your subnet - All of main campus is on the 137.215 subnet. The control lab (in fact, most of Eng II) is on the 137.215.117 subnet.

You should be able to check that the help desk did their job by rebooting or by running Start|run|ipconfig/renew (this might take a day to be completed)

The computers from Createk already have Microsoft XP Professional installed. They also have the [[Windows Update]] and [[Anti Virus|Anti-virus]] installed. The following needs to be changed/added (if necessary):
* The QoS Packet Scheduler Service (Service)
* Client for Microsoft Networks (Client)
* File and Printer Sharing for Microsft Networks (Service)

This can be done by changing the properties of Lan connection under Network connections in the Control Panel. Then under the general tab, add the items (as services or clients) if not already there. Then run the network setup wizard (also in the control panel's network connections) using the default settings. You must be a member of the PROSESLAB workgroup. Do not create a setup disk and exit the wizard. You can now access and be accessed from other computers.

== Software set-up ==

Now that you have a new computer you need some software. In the lab you probably need the following:

'''Microsoft Office''' - The university has some license with Microsoft so ask around where you can get an original CD.

'''Acrobat Reader''' - The latest version starts instantly and is available from [ftp://ftp.up.ac.za/mirrors/adobe.com/ ftp.up.ac.za].

'''[[Matlab]] 2007a''' - The latest version is required to run all the communication stuff we need. Remember to register the [[Opto22]] service

'''[[Anti Virus|Anti-virus Software]]''' - A vital necessity

'''[[Windows Update]]''' - A vital necessity

'''Alternative Browser and Email Application''' - A mozilla.org based web browser and email client is strongly recommended. We try not to use Internet Explorer as it is useless and prone to viruses, worms and spyware. Check out the Mozilla web Suite (maybe the seamonkey version) or Firefox (the second most used browser). They are all available from [ftp://ftp.up.ac.za/mirrors/mozilla.org/ ftp.up.ac.za]. Mozilla and Firefox are far quicker, more reliable and more secure than Internet Explorer. Tabbed browsing is another feature that will make you wonder why people still use Internet Explorer. You can also use Opera (but ensure that at least Firefox is on the rig computers. Thunderbird (also from Mozilla.org) is an excellent mail application. Ensure that automatic updates for the alternative browsers are turned off and rather use the new versions release on the ftp site to save that internet access.

'''Some Media Player''' - Winamp 5 is recommended. In the lab we play music over Heimdall. The music is kept in <tt>C:\music</tt> (this folder is not generally shared). It is recommended that you install NetAmp to control the volume of Heimdall from you workstation. This is useful if the phone rings etc. NetAmp is already installed on Heimdall as a server using the default port. 
Downloads:
*[http://ragnarok.up.ac.za/programdownloads/Media/winamp509_pro.exe Winamp 5]
*[http://ragnarok.up.ac.za/programdownloads/Media/Netamp.exe NetAmp]

'''VNC''' - This is a stylish program to allow you to access other computers directly. It is usefull if you want to access a rig computer form the comfort of your cubicle or if you need to change the playlist on heimdall while somebody else is using the screen for [[PMC Lab Computers|Ragnarok]]. On a rig computer you need to install the server as well (remember to add the standard password). You will also need to add it as an exception to the Windows XP firewall. On your personnel computer where you probably don't want people to have remote control you merely need to copy the small VNC Viewer program. 
Downloads:
* [http://ragnarok.up.ac.za/programdownloads/VNC_WIN32/vncviewer/vncviewer.exe VNC Viewer]
* [http://ragnarok.up.ac.za/programdownloads/VNC_WIN32/vnc-3.3.6-x86_win32.exe Client and Server]

== Internet access ==

To get internet access a document (which needs to be signed by the head of the department) needs to be completed. This document can be obtained from Zenobia Botha (on floor 5, NWII building) or [http://www.up.ac.za/intranet/it/documentation/docs/INT1035.pdf here]. The completed form may be handed in at room 1-25, NWII building, or sent by email to [mailto:help@it.up.ac.za help@it.up.ac.za]. Applications are processed within three days. Applicants
must personally visit room 5-6, NWII building, to obtain their username and password – this is a security measure to protect the applicant.

Unless the cost point, staff/student number and signature of the head of the department are provided, the application cannot be processed.

'''Proxy Servers''' - You may want to remember these autoconfiguraion script locations (the IPs and ports are also shown):
*<nowiki>http://innopac.up.ac.za:8080/proxy.pac</nowiki> (The AIS one - not sure why you would want to use this - maybe read ScienceDirect)
** IP: 137.215.9.20 PORT: 8080
*<nowiki>http://www.up.ac.za/proxy.pac</nowiki> (This is what you want to set your browser (etc) to for normal firewall access)
** IP: 137.215.6.53 PORT: 8080
*<nowiki>http://www.up.ac.za/proxyc1.pac</nowiki> (Set your browser (etc) to this if you are using a Novell Account)
** IP: 137.215.6.50 PORT: 8080

Main Page

2010-03-10T08:52:34Z

AndreC: Tutor portal link added

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.
* '''2009/10/29''': The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
* '''2009/04/05''': Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]
* Information to help [[New members of staff]]

==Staff Links==
* [[IT procurement]]
* [https://www.up.ac.za/virtualcampus/externalgroup.do?group=tutor Tutor portal]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Open Source

2010-03-05T06:38:01Z

AndreC: Conistent formatting of tables

A guy called Richard M Stalman had this idea that software should be free as in freedom (check out [http://ragnarok.up.ac.za/documents/faif.pdf faif.pdf]). A bit too long for a casual glance, right? The gist is that "normal" software these days is closed and proprietary. This means that no-one can modify the programs without permission of the authors. The formats we use are also closed and proprietary, meaning that it is nearly impossible to open the files we all need to read (.doc is not a global standard).

The real name for the kind of software that Stallman had in mind is [[Free Software]], but Open source is used a lot, and more accessible.

This website is hosted on a server running [[Ubuntu]] (a free operating system based on the Linux kernel), using Apache. The documents you will find on this website are all readable by anyone (and not just using [[PMC Lab Users|Acrobat reader]]).

There are several places to get open source software. On campus, there are several mirrors of open source software. Check out the FTP site ftp://ftp.up.ac.za/mirrors . OpenOffice is a free software replacement for Microsoft office. Firefox is the best browser out there and also happens to be free. It can also be used together with Thunderbird to replace Microsoft Outlook (mail and calendar).

Of course, there are tons of free software titles out there. Try looking at [http://freshmeat.net/ freshmeat.org] or [http://sourceforge.net/ sourceforge.org] when you need software. You'd be surprised how many of the programs that you would pirate are available for free. Some software often runs better than those you would have pirated.

== Open source downloads ==

The table below contains some commonly used software and suggestions for open source replacements. Most downloads are available locally and won't use up your internet credits when you're on campus.

{| border="1" cellpadding="2"
|-
|style="width:20%"|<center>'''Package'''</center>
|style="width:65%"|<center>'''Open Source Replacement'''</center>
|style="width:15%"|<center>'''Download'''</center>
|-
! colspan="3" align="center" style="background:#A7C1F2" |Office software
|-
|Microsoft Office||''OpenOffice'' can read and write Microsoft Office files and export to PDF natively. The suite includes great tools for writing documents, a spreadsheet and a cool drawing program to draw diagrams with||<center>[ftp://ftp.up.ac.za/mirrors/openoffice.org/ Download]</center>
|-
|(Microsoft Word)||''[[TeX]]'' (''MiKTeX'') is a powerful alternative for writing technical documents.||<center>[[TeX|Download]]</center>
|-
! colspan="3" align="center" style="background:#A7C1F2" | Computational tools
|-
|rowspan="2"|Matlab
|''Octave'' is the smallest of the Matlab clones. Simple programs should run without problems in Matlab.||<center>[http://ragnarok.up.ac.za/programdownloads/octave-windows.exe Download]</center>
|-
|''Python'' with the ''Scilab'' package is also a very compelling alternative to Matlab. || <center>[http://python.org Python homepage] [http://scipy.org Scipy homepage]</center>
|-
|rowspan="2"|Simulink
|''Scilab'' has similar functionality to Simulink as well as Matlab, but Scilab programs may not run in Matlab. Scilab 3 has a lot of added featues and may be more compatible with your Matlab programs (still no running of Scilab programs in Matlab though)||<center>[http://ragnarok.up.ac.za/programdownloads/scilab27.exe Download]</center>
|-
|''HyVisual'' is like Simulink. It includes support for Finite State Machine descriptions of models and a lot more. You can check out the manual [http://ragnarok.up.ac.za/programdownloads/hyvisual.pdf here]. Note that you need [[Java Runtime Environment]] to get this to work.||<center>[http://ragnarok.up.ac.za/programdownloads/HyViInst.exe Download]</center>
|-
|S+||''R'' is similar to S+ (no, really). It does more statistical operations, but is not Matlab-like at all||<center>[http://ragnarok.up.ac.za/programdownloads/rw1061.exe Download]</center>
|-
! colspan="3" align="center" style="background:#A7C1F2" | Symbolic computation
|-
|Maple / Mathematica||''Maxima'' is a full-featured Computer Algebra System. Many of Mathematica and Maple's functionality is derived from Maxima.||<center>[http://ragnarok.up.ac.za/programdownloads/maxima-5.9.0.exe Download]</center>
|-
! colspan="3" align="center" style="background:#A7C1F2" | Browsers and Mail clients
|-
|rowspan="2"|Internet Explorer
|''Mozilla'' can be used as a replacement for Internet Explorer and Outlook. It imports mail files from Outlook mail and has a lot of unique features like tabbed browsing and support for mouse gestures.||<center>[ftp://ftp.up.ac.za/mirrors/mozilla.org/mozilla/releases/ Download]</center>
|-
|''Firefox'' (also by the Mozilla Foundation) is a quick and easy browser with loads of functionality. Why suffer when you can... well... not suffer?||<center>[ftp://ftp.up.ac.za/mirrors/mozilla.org/firefox/releases/ Download]</center>
|-
|rowspan="2"|Microsoft Outlook
|''Mozilla'' can be used as a replacement for Outlook.||<center>[ftp://ftp.up.ac.za/mirrors/mozilla.org/mozilla/releases/ Download]</center>
|-
|''Thunderbird'' (also by the Mozilla Foundation) can be used to replace Outlook. It enables the download of mail to an external source (like a flash disk) for later viewing. Thunderbird is a very popular mail client on campus.||<center>[ftp://ftp.up.ac.za/mirrors/mozilla.org/thunderbird/releases/ Download]</center>
|-
! colspan="3" align="center" style="background:#A7C1F2" | Archiving software
|-
|WinZip||''7zip'' is a small program able to deal with all the popular archive types (.zip/.rar/.ace) and more (.7z/.tar). Lightweight and free.||<center>[http://ragnarok/programdownloads/7z465.exe Download]</center>
|}

Several of these applications are also available on the GnuwinIICD. This is a collection of [[Free Software|free software]], available for download [http://gnuwin.epfl.ch/en/order.html here].

Opto Troubleshooting

2010-02-16T09:53:44Z

AndreC: General info on OPTO modules (network related)

This page is dedicated to troubleshooting of the Opto22 system. Additions to this page should be made in a ''Symptom/Solution''-style. The goal is to provide a 'first place to look'-list for other Opto users and help minimise downtime.
__FORCETOC__
== General Information ==
This table contains info regarding the two Opto brains. It might be useful when troubleshooting network-related issues. Although the physical network point doesn't, strictly speaking, make a difference - it's good to know this in case of network restructuring (note: this has happened before).
{| border="1" cellpadding="2"
|-
|width="300pt" style="background:#A7C1F2"|
|width="350pt" style="background:#A7C1F2"|<center>'''Opto Brain 1'''</center>
|width="350pt" style="background:#A7C1F2"|<center>'''Opto Brain 2'''</center>
|-
|Physical network point||<center>D231</center>||<center>D232</center>
|-
|MAC Address||<center>00:A0:3D:00:17:8E</center>||<center>00:A0:3D:00:42:EA</center>
|-
|DNS Name||<center>opto1</center>||<center>opto2</center>
|-
|Static IP||<center>137.215.116.239</center>||<center>137.215.116.238</center>
|}
== Opto Brains ==
=== 3 Volt Fault ===
'''Symptom''' 
The LED indicating a 3 Volt fault is on and the Opto unit can't be communicated with. Resetting the IP manually (see [http://ragnarok/programdownloads/Opto22/1112_SNAP_Ethernet_Brain_Users_Guide.pdf Brain manual]) is also not possible in this state. 
'''Solution''' 
Use a multimeter and check the 5V supply voltage to the rail; the Opto brains require 5V DC (+/-0.1V). If it's found that the supplied voltage is below 4.9V, adjust the output of the power supply (if possible). As a check, test the 'broken' power supply on a working Opto brain to confirm that it is indeed the power supply that has failed and not a short in the brain.

== SNAP Modules ==

Shared files

2010-02-08T09:37:44Z

AndreC: FTP - Mac users note

Ragnarok hosts files using several different protocols.

* [http://ragnarok http access] is what you are using to view this page.
* [ftp://ragnarok ftp access] can be used from your browser and is the preferred way to link to files from the wiki.
* [http://en.wikipedia.org/wiki/Server_Message_Block CIFS/SMB] is the Microsoft Windows file sharing protocol, which is widely supported.

Files are divided into Personnel-only, Student and Group files. A public ftp directory also exists mainly for files linked to the wiki. All three protocols direct to the same files (of a user) and will require authentication (with the slight exception of the public ftp). The use of each protocol is briefly described in the sections below. The username '''''personnel''''' will be used in all examples.

Ask [mailto:carl.sandrock@up.ac.za Carl] about obtaining write-access (so that you can upload or change files).

==HTTP==
The http protocol is mainly used to communicate with websites using browsers such as Firefox, Safari and Internet Explorer. The following http access methods are possible on Ragnarok;
* [http://ragnarok http://ragnarok] : this takes you to the main page of the wiki (http://ragnarok/wiki).
* [http://ragnarok/personnel http://ragnarok/personnel] : this takes you to the shared files of a user (just replace ''personnel'' with your given username). Access to this directory (and all files in this folder) will require authentication. Files can be linked to the wiki from this directory (and subdirectories) but will require authentication when accessed.

==FTP==
The ftp protocol is the prefered method for linking files to the wiki. Public ftp should be used for open access files and the local ftp for private files. Files can be uploaded on the server using ftp clients such as FileZilla, gFTP, Cyberduck (Mac) or Nautilus. The general access structure is;
* [ftp://ragnarok/ ftp://ragnarok/] : this takes you to the public ftp when using browsers. When using a ftp client you will be prompted to log in, this is equivalent to anonymous login with no password.
* [ftp://personnel@ragnarok/ ftp://personnel@ragnarok/] : this prompts for authentication and takes you to the files of the user. You will also be taken to this directory when you login as a user using an ftp client.
===Public FTP===
The [ftp://ragnarok/publicftp public ftp] is mainly used for file uploads to link to the wiki. Anonymous users can upload files but not delete them. Therefore make sure that the file is being uploaded to the correct location and that it is the final version of that file.
===Local FTP===
As discussed above, access to the local (private) ftp of a user requires authentication. Note that when linking private files to the wiki the following form should be used;
ftp://personnel@ragnarok/something/somethingelse.doc
As with all private files, authentication will be required.
===Mac users===
When using Finder, for the ftp-shares on Ragnarok, shares are mounted as read-only (for both user and anonymous login). This seems to be an issue with Finder itself. Users are therefore advised to use another ftp client, like Cyberduck (locally available [ftp://ragnarok/publicftp/programdownloads/Cyberduck-3.4.1.zip here]).

A download of [ftp://ragnarok/publicftp/programdownloads/RCDefaultApp-2.1.X.dmg RCDefaultApp] is also available, should the user wish to change the default application used to open ftp sites (i.e. so that Safari uses Cyberduck instead of Finder).

==CIFS/SMB==
The shared files of a user/group can be accessed using a file manager such as Windows Explorer or Nautilus. Windows users may want to [[Map network drives]] for the server. If you are not personnel, you can simply browse the files available to all users by clicking Start, selecting Run and typing <tt>\\ragnarok</tt>.

Help:Uploading

2010-02-02T07:41:58Z

AndreC:

When creating a wiki page for information and file sharing, the upload of files and images are important. In this context "files" refer to files that are not explicitly displayed on the wiki, for instance [ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf this pdf file]. "Images" refer to pictures and graphs shown on the wiki pages, for example the logo panel on the [[Main Page]] and the photo on the [[pH rig]] page.

== Images ==
Uploading and using images on the wiki is a simple procedure using only the web browser.
===Uploading===
* Click the [[Special:Upload|Upload file]] link on the left (below Toolbox)
* Click Browse to select the image to upload (permitted file types: png, gif, jpg, jpeg)
* Fill in a filename (important) and description and click Upload file.
===Inserting in pages===
Using the filename as entered when uploading the image, one of the following forms can be used to display the image;
* '''<nowiki>[[File:File.jpg]]</nowiki>''' to use the full version of the file
* '''<nowiki>[[File:File.png|200px|thumb|left|alt text]]</nowiki>''' to use a 200 pixel wide rendition in a box in the left margin with 'alt text' as description
The [http://www.mediawiki.org/wiki/Help:Images Mediawiki] image help page can be consulted for more explanations and options when using images.

== Files ==
===Uploading===
Uploading files to the wiki requires an [http://en.wikipedia.org/wiki/FTP_clients ftp client] (Windows Explorer also works). Most ftp clients have a GUI making file uploading very similar to file management in a file manager such as Windows Explorer or Nautilus. Anonymous access to the ftp or simply ftp://ragnarok/publicftp (type this in the Windows Explorer address bar) allows for file uploading in the ''publicftp'' directory (or its subdirectories).
===Linking to files===
Once uploaded, the files can be linked to in a page using standard external links (as explained in the [[Help:Formatting#Links|formatting/links help page]]). As an example, the Ubuntu Pocket Guide can be linked to using;
<nowiki>[ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf Ubuntu Pocket Guide]</nowiki>
which generates this;
[ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf Ubuntu Pocket Guide]

[[Category:Help|Formatting]]

Main Page

2010-02-02T07:38:01Z

AndreC: File upload link

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.
* '''2009/10/29''': The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
* '''2009/04/05''': Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* [[Help:Uploading|How to upload files on the wiki]]
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Help:Uploading

2010-02-02T07:36:29Z

AndreC: New help page for file uploading

When creating a wiki page for information and file sharing, the upload of files and images are important. In this context "files" refer to files that are not explicitly displayed on the wiki, for instance [ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf this pdf file]. "Images" refer to pictures and graphs shown on the wiki pages, for example the logo panel on the [[Main Page]] and the photo on the [[pH rig]] page.

== Images ==
Uploading and using images on the wiki is a simple procedure using only the web browser.
===Uploading===
* Click the [[Special:Upload|Upload file]] link on the left (below Toolbox)
* Click Browse to select the image to upload (permitted file types: png, gif, jpg, jpeg)
* Fill in a filename (important) and description and click Upload file.
===Inserting in pages===
Using the filename as entered when uploading the image, one of the following forms can be used to display the image;
* '''<nowiki>[[File:File.jpg]]</nowiki>''' to use the full version of the file
* '''<nowiki>[[File:File.png|200px|thumb|left|alt text]]</nowiki>''' to use a 200 pixel wide rendition in a box in the left margin with 'alt text' as description
The [http://www.mediawiki.org/wiki/Help:Images Mediawiki] image help page can be consulted for more explanations and options when using images.

== Files ==
===Uploading===
Uploading files to the wiki requires an [http://en.wikipedia.org/wiki/FTP_clients ftp client]. Most ftp clients have a GUI making file uploading very similar to file management in a file manager such as Windows Explorer or Nautilus. Anonymous access to the ftp or simply ftp://ragnarok/publicftp allows for file uploading in the ''publicftp'' directory (or its subdirectories).
===Linking to files===
Once uploaded, the files can be linked to in a page using standard external links (as explained in the [[Help:Formatting#Links|formatting/links help page]]). As an example, the Ubuntu Pocket Guide can be linked to using;
<nowiki>[ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf Ubuntu Pocket Guide]</nowiki>
which generates this;
[ftp://ragnarok/publicftp/documents/linux/ubuntupocketguide-v1-1.pdf Ubuntu Pocket Guide]

[[Category:Help|Formatting]]

PH rig

2010-02-02T07:08:49Z

AndreC: Redirected page to PH Loop

#REDIRECT [[PH Loop]]

Help:Contents

2010-02-02T07:02:22Z

AndreC:

Here is a list of help pages for this wiki. This wiki is powered by [[MediaWiki]].

* [[Help:Formatting|Help: Formatting / Editing]]
* [[Help:Uploading|Help: Uploading files]]
* [[Help:Categories|Help: Categories]]

Click [[:Category:Help|here]] for a complete list of pages in the Help category.

Main Page

2010-02-02T07:00:36Z

AndreC: News update

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* '''2010/02/02''': Server maintenace complete. The focus was mainly on file access and authentication - have a look at the [[shared files]] page for more information on using the different access protocols.
* '''2009/10/29''': The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
* '''2009/04/05''': Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Shared files

2010-02-02T06:56:20Z

AndreC: Update after server maintenance

Ragnarok hosts files using several different protocols.

* [http://ragnarok http access] is what you are using to view this page.
* [ftp://ragnarok ftp access] can be used from your browser and is the preferred way to link to files from the wiki.
* [http://en.wikipedia.org/wiki/Server_Message_Block CIFS/SMB] is the Microsoft Windows file sharing protocol, which is widely supported.

Files are divided into Personnel-only, Student and Group files. A public ftp directory also exists mainly for files linked to the wiki. All three protocols direct to the same files (of a user) and will require authentication (with the slight exception of the public ftp). The use of each protocol is briefly described in the sections below. The username '''''personnel''''' will be used in all examples.

Ask [mailto:carl.sandrock@up.ac.za Carl] about obtaining write-access (so that you can upload or change files).

==HTTP==
The http protocol is mainly used to communicate with websites using browsers such as Firefox, Safari and Internet Explorer. The following http access methods are possible on Ragnarok;
* [http://ragnarok http://ragnarok] : this takes you to the main page of the wiki (http://ragnarok/wiki).
* [http://ragnarok/personnel http://ragnarok/personnel] : this takes you to the shared files of a user (just replace ''personnel'' with your given username). Access to this directory (and all files in this folder) will require authentication. Files can be linked to the wiki from this directory (and subdirectories) but will require authentication when accessed.

==FTP==
The ftp protocol is the prefered method for linking files to the wiki. Public ftp should be used for open access files and the local ftp for private files. Files can be uploaded on the server using ftp clients such as FileZilla, gFTP or Nautilus. The general access structure is;
* [ftp://ragnarok/ ftp://ragnarok/] : this takes you to the public ftp when using browsers. When using a ftp client you will be prompted to log in, this is equivalent to anonymous login with no password.
* [ftp://personnel@ragnarok/ ftp://personnel@ragnarok/] : this prompts for authentication and takes you to the files of the user. You will also be taken to this directory when you login as a user using an ftp client.
===Public FTP===
The [ftp://ragnarok/publicftp public ftp] is mainly used for file uploads to link to the wiki. Anonymous users can upload files but not delete them. Therefore make sure that the file is being uploaded to the correct location and that it is the final version of that file.
===Local FTP===
As discussed above, access to the local (private) ftp of a user requires authentication. Note that when linking private files to the wiki the following form should be used;
ftp://personnel@ragnarok/something/somethingelse.doc
As with all private files, authentication will be required.

==CIFS/SMB==
The shared files of a user/group can be accessed using a file manager such as Windows Explorer or Nautilus. Windows users may want to [[Map network drives]] for the server. If you are not personnel, you can simply browse the files available to all users by clicking Start, selecting Run and typing <tt>\\ragnarok</tt>.

Shared files

2010-02-02T05:49:48Z

AndreC:

Shared files

2010-02-02T05:29:49Z

AndreC:

Main Page

2010-02-02T05:20:15Z

AndreC: Server downtime notice (removed)

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* 2009/10/29: The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
* 2009/04/05: Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

Open Source

2010-02-01T11:24:26Z

AndreC: fixed link

A guy called Richard M Stalman had this idea that software should be free as in freedom (check out [http://ragnarok.up.ac.za/documents/faif.pdf faif.pdf]). A bit too long for a casual glance, right? The gist is that "normal" software these days is closed and proprietary. This means that no-one can modify the programs without permission of the authors. The formats we use are also closed and proprietary, meaning that it is nearly impossible to open the files we all need to read (.doc is not a global standard).

The real name for the kind of software that Stallman had in mind is [[Free Software]], but Open source is used a lot, and more accessible.

This website is hosted on a server running [[Ubuntu]] (a free operating system based on the Linux kernel), using Apache. The documents you will find on this website are all readable by anyone (and not just using [[PMC Lab Users|Acrobat reader]]).

There are several places to get open source software. On campus, there are several mirrors of open source software. Check out the FTP site ftp://ftp.up.ac.za/mirrors . OpenOffice is a free software replacement for Microsoft office. Firefox is the best browser out there and also happens to be free. It can also be used together with Thunderbird to replace Microsoft Outlook (mail and calendar).

Of course, there are tons of free software titles out there. Try looking at [http://freshmeat.net/ freshmeat.org] or [http://sourceforge.net/ sourceforge.org] when you need software. You'd be surprised how many of the programs that you would pirate are available for free. Some software often runs better than those you would have pirated.

== Open source downloads ==

The table below contains some commonly used software and suggestions for open source replacements. Most downloads are available locally and won't use up your internet credits when you're on campus.

{| border="1" cellpadding="2"
|-
|width="300pt"|<center>'''Package'''</center>
|width="600pt"|<center>'''Open Source Replacement'''</center>
|width="100pt"|<center>'''Download'''</center>
|-
|colspan="3"|'''''Office software'''''
|-
|Microsoft Office||''OpenOffice'' can read and write Microsoft Office files and export to PDF natively. The suite includes great tools for writing documents, a spreadsheet and a cool drawing program to draw diagrams with||<center>[ftp://ftp.up.ac.za/mirrors/openoffice.org/ Download]</center>
|-
|(Microsoft Word)||''[[TeX]]'' (''MiKTeX'') is a powerful alternative for writing technical documents.||<center>[[TeX|Download]]</center>
|-
|colspan="3"|'''''Computational tools'''''
|-
|rowspan="2"|Matlab
|''Octave'' is the smallest of the Matlab clones. Simple programs should run without problems in Matlab.||<center>[http://ragnarok.up.ac.za/programdownloads/octave-windows.exe Download]</center>
|-
|''Python'' with the ''Scilab'' package is also a very compelling alternative to Matlab. || <center>[http://python.org Python homepage] [http://scipy.org Scipy homepage]</center>
|-
|rowspan="2"|Simulink
|''Scilab'' has similar functionality to Simulink as well as Matlab, but Scilab programs may not run in Matlab. Scilab 3 has a lot of added featues and may be more compatible with your Matlab programs (still no running of Scilab programs in Matlab though)||<center>[http://ragnarok.up.ac.za/programdownloads/scilab27.exe Download]</center>
|-
|''HyVisual'' is like Simulink. It includes support for Finite State Machine descriptions of models and a lot more. You can check out the manual [http://ragnarok.up.ac.za/programdownloads/hyvisual.pdf here]. Note that you need [[Java Runtime Environment]] to get this to work.||<center>[http://ragnarok.up.ac.za/programdownloads/HyViInst.exe Download]</center>
|-
|S+||''R'' is similar to S+ (no, really). It does more statistical operations, but is not Matlab-like at all||<center>[http://ragnarok.up.ac.za/programdownloads/rw1061.exe Download]</center>
|-
|colspan="3"|'''''Symbolic computation'''''
|-
|Maple / Mathematica||''Maxima'' is a full-featured Computer Algebra System. Many of Mathematica and Maple's functionality is derived from Maxima.||<center>[http://ragnarok.up.ac.za/programdownloads/maxima-5.9.0.exe Download]</center>
|-
|colspan="3"|'''''Browsers and Mail programs'''''
|-
|rowspan="2"|Internet Explorer
|''Mozilla'' can be used as a replacement for Internet Explorer and Outlook. It imports mail files from Outlook mail and has a lot of unique features like tabbed browsing and support for mouse gestures.||<center>[ftp://ftp.up.ac.za/mirrors/mozilla.org/mozilla/releases/ Download]</center>
|-
|''Firefox'' (also by the Mozilla Foundation) is a quick and easy browser with loads of functionality. Why suffer when you can... well... not suffer?||<center>[ftp://ftp.up.ac.za/mirrors/mozilla.org/firefox/releases/ Download]</center>
|-
|rowspan="2"|Microsoft Outlook
|''Mozilla'' can be used as a replacement for Outlook.||<center>[ftp://ftp.up.ac.za/mirrors/mozilla.org/mozilla/releases/ Download]</center>
|-
|''Thunderbird'' (also by the Mozilla Foundation) can be used to replace Outlook. It enables the download of mail to an external source (like a flash disk) for later viewing. Thunderbird is a very popular mail client on campus.||<center>[ftp://ftp.up.ac.za/mirrors/mozilla.org/thunderbird/releases/ Download]</center>
|-
|colspan="3"|'''''Archiving software'''''
|-
|WinZip||''7zip'' is a small program able to deal with all the popular archive types (.zip/.rar/.ace) and more (.7z/.tar). Lightweight and free.||<center>[http://ragnarok/programdownloads/7z465.exe Download]</center>
|}

Several of these applications are also available on the GnuwinIICD. This is a collection of [[Free Software|free software]], previously available on the [[PMC Lab Computers|Groa server]].

Main Page

2010-01-28T07:51:25Z

AndreC: Server downtime notice

{| align="right" border="3" width="360px" style="color:Red"
|<center>'''Server Downtime'''</center>
|-
|style="color:black" |The server will be down from '''Friday 29 Jan (17:00)''' to '''Monday 1 Feb (17:00)''' for maintenance. Please contact André (ahcampher@tuks.co.za) if this poses a problem.

Admin.
|}

Welcome to the Chemical Engineering department's server. It is named after the [http://en.wikipedia.org/wiki/Ragnarok apocalyptic event] in Norse mythology. The main interface is a [http://en.wikipedia.org/wiki/Wiki Wiki], and the links in this paragraph should take you to [http://www.wikipedia.org Wikipedia], the best-known example of what communal editing can achive.

The server is still under construction -- we track progress on the server project using [http://ragnarok.up.ac.za/redmine/projects/show/chemengweb redmine]. The whole thing is editable at the moment, so if you see an error, fix it! If there's something you want but don't know how to do, add it to the [[WishList]].

Speaking of construction, check out the [http://137.215.115.249 progress] of the new Engineering building.

==News==
* 2009/10/29: The wiki has been math-enabled, so we can now do formulae like <math>b = \frac{1}{2 + a}</math>. Look at the [http://meta.wikimedia.org/wiki/MediaWiki_math_markup documentation] for how math is entered.
* 2009/04/05: Both [http://ragnarok.up.ac.za/redmine redmine] and the wiki now support e-mail notification. Have a look at [[Email Notification|this page]] for help on using this feature.

==Topical links==
Things that are topical/are being discussed now, discussed on the wiki:
* Check [http://labadmin lab bookings]
* View the [http://skoll/timetables automatically generated timetables]
* [[Calculating Marks]] for the exams (and allocating supps)
* the [[Undergraduate external]] process
* [[Using Gmail]]
* Add your [[Scopus stats]] to your website
* [[CSC 411]] design project project allocation
* [[Managing passwords]]
* Setting up your [[Backups]]

==Quick Links==
* [[Curriculum|Modules taught by our department]]
* [[Shared files]]
* [[Workflows]]
* [[Documents]]
* [[Plagiarism]]

==Group Websites==
These sites are starting points for particular research groups within the department.

* [[Process Modelling and Control]]
* [[Reaction Engineering]]
* [[Tribology]]

==Educational links==
*Learn from other's [[common mistakes]].
*[http://www.library.up.ac.za/ebit/eresources_engineering.htm Engineering E-Sources of UP]

If you use Firefox and write papers with references, you may want to start using [http://zotero.org Zotero] to organize your research. The university also has a license for [http://www.refworks.com RefWorks] -- see the [http://0-www.refworks.com.innopac.up.ac.za/tutorial/ tutorial].

----
<center>'''Powered by'''</center>
<center>
{| border="0" cellpadding="2"
|-
|{{clickpic|Media wiki|http://ragnarok/images/a/a9/Mediawikilogo.png}}
|{{clickpic|Apache|http://ragnarok/images/4/40/Apachelogo.png}}
|{{clickpic|Ubuntu|http://ragnarok/images/0/02/Ubuntulogo.png}}
|}</center>

PH Rig Maintenance

2009-11-10T17:33:40Z

AndreC:

This page documents the maintenance done as well as changes made to the pH rig. It is important that all changes be noted here as it makes the tracking of scavenged/stolen equipment a little easier.
== Pre 2009 ==
Maintenance and changes made to the pH rig before 2009 are not explicitly maintained on the wiki. Consult the project documentation of previous years for said changes.
== 2009 ==
'''Wiring/Instrumentation''' 
[[File:Pmc02ph_instruments.JPG|300px|right|thumb|pH rig instruments showing new temp. transmitter housing and turned pH transmitter cover]]
Wiring of rig found to be in a state of disrepair. An attempt is made to fix all wiring and restore all electronic equipment to a working condition. Fixed equipment/wiring is listed below:
* I/P transducer for control valve 2 and 1 faulty. Replaced both transducers, reconnected piping and wiring.
* Control valve 2 - reconnected piping.
* All the RTDs and temperature transmitters have been removed from the rig (scavenged). Fitted an RTD to each tank and wired to new temperature transmitters.
* Housing for temperature transmitters made and fitted to rig (see image).
* Control valve 1 seems to be stuck. Apparently the original valve was removed and replaced by current non-working valve. Valve was opened and oiled and reconnected to new I/P transducer. In working order now.
* Original Signet flow sensor has been removed from rig. A new Burkert flow sensor was fitted to the inlet of tank 3. Old signal conditioner was removed and its power supply removed from the DB. Cable 006 from the DB was wired to the loop power and a Burkert flow transmitter was installed. Unfortunately, both Burkert flow transmitters (brand new) were faulty and the flow measurement has been abandoned due to time constraints.
* Re-fitted pH transmitter 1 and connected a new pH probe.
* PH probe connected to pH transmitter 2 has stopped working. Replaced with working probe. Short wire on new probed forced the cover of pH transmitter 2 to be turned around so as to reach top tank (see image).
* Pump 2 (base pump) was delivering a very low flow when compared to the identical pump 1 (acid pump). The impeller of pump 2 was most likely damaged due to bad decommissioning of the rig. The two pumps were switched so that the 'slower' pump operates on the line which has no control valves.
[[File:Pmc02ph_tankstand_before.JPG|150px|thumb|Old feed tank stand]] [[File:Pmc02ph_tankstand_after.JPG|150px|thumb|New feed tank stand]]
'''Piping''' 
Numerous leaks were fixed and connections made where piping has been scavenged off the rig.

'''Structural'''
* Stands for feed tanks (currently dustbins) were found to not give sufficient support when tanks are full. Constructed new feed tank stand.
* Fitting of stirrers to tanks found to be flimsy. Versatility of stands (moving them around) outweighed effort to construct new stands. Left as is, but sturdier stands are recommended.
* Rerouted pipe connecting CV001 and FE001 - cut away some of the metal structure to remove strain from pipe.

PH Rig Maintenance

2009-11-10T17:32:48Z

AndreC: Pumps

This page documents the maintenance done as well as changes made to the pH rig. It is important that all changes be noted here as it makes the tracking of scavenged/stolen equipment a little easier.
== Pre 2009 ==
Maintenance and changes made to the pH rig before 2009 are not explicitly maintained on the wiki. Consult the project documentation of previous years for said changes.
== 2009 ==
'''Wiring/Instrumentation''' 
[[File:Pmc02ph_instruments.JPG|300px|right|thumb|pH rig instruments showing new temp. transmitter housing and turned pH transmitter cover]]
Wiring of rig found to be in a state of disrepair. An attempt is made to fix all wiring and restore all electronic equipment to a working condition. Fixed equipment/wiring is listed below:
* I/P transducer for control valve 2 and 1 faulty. Replaced both transducers, reconnected piping and wiring.
* Control valve 2 - reconnected piping.
* All the RTDs and temperature transmitters have been removed from the rig (scavenged). Fitted an RTD to each tank and wired to new temperature transmitters.
* Housing for temperature transmitters made and fitted to rig (see image).
* Control valve 1 seems to be stuck. Apparently the original valve was removed and replaced by current non-working valve. Valve was opened and oiled and reconnected to new I/P transducer. In working order now.
* Original Signet flow sensor has been removed from rig. A new Burkert flow sensor was fitted to the inlet of tank 3. Old signal conditioner was removed and its power supply removed from the DB. Cable 006 from the DB was wired to the loop power and a Burkert flow transmitter was installed. Unfortunately, both Burkert flow transmitters (brand new) were faulty and the flow measurement has been abandoned due to time constraints.
* Re-fitted pH transmitter 1 and connected a new pH probe.
* PH probe connected to pH transmitter 2 has stopped working. Replaced with working probe. Short wire on new probed forced the cover of pH transmitter 2 to be turned around so as to reach top tank (see image).
* Pump 2 (base pump) was delivering a very low flow when compared to the identical pump 1 (acid pump). The impeller of pump 2 was most likely damaged due to bad decommissioning of the rig. The two pumps were switched so that the 'slower' pump operates on the line which has no control valves.

'''Piping''' 
Numerous leaks were fixed and connections made where piping has been scavenged off the rig.

'''Structural'''
[[File:Pmc02ph_tankstand_before.JPG|150px|thumb|Old feed tank stand]] [[File:Pmc02ph_tankstand_after.JPG|150px|thumb|New feed tank stand]]
* Stands for feed tanks (currently dustbins) were found to not give sufficient support when tanks are full. Constructed new feed tank stand.
* Fitting of stirrers to tanks found to be flimsy. Versatility of stands (moving them around) outweighed effort to construct new stands. Left as is, but sturdier stands are recommended.
* Rerouted pipe connecting CV001 and FE001 - cut away some of the metal structure to remove strain from pipe.