http://chemeng.up.ac.za/wiki/api.php?action=feedcontributions&feedformat=atom&user=28029187Chemical Engineering @ UP wiki - User contributions [en]2026-05-12T12:54:56ZUser contributionsMediaWiki 1.25.1http://chemeng.up.ac.za/wiki/index.php?title=Tribology&diff=1183Tribology2011-12-01T09:33:36Z<p>28029187: /* Tribology Library */</p>
<hr />
<div>==Tribology Laboratory - University of Pretoria==<br />
<br />
[[File:Tribpic.jpg|300px|right]]<br />
<br />
The tribology group is headed by Professor Philip de Vaal and was started in 1987 with support from ESKOM, Anglo-American and ISCOR. The activities in the lab focus on lubricant performance evaluation, which includes analysis of greases, oils and diesels. More recent industrial problems with diesel quality in South Africa motivated research in the field of diesel lubricity and biodiesel, sponsored by Sasol.<br />
<br />
The Tribology Lab not only functions as a academic research lab, but also as an evaluation lab for industry. Several companies use the Tribology Lab for failure analysis and quality control.<br />
<br />
The first section gives information regarding the '''[[Tribology#Equipment|equipment]]''' used in the Tribology Lab. The user manuals, test procedures and ASTM/ISO/DIN/SABS standards for each piece of equipment is included in the respective pages. Documentation of past and present projects can also be found there.<br />
<br />
The second section includes all the work and some of the literature regarding '''[[hip tribology]]''', and the third section has all the past |test results done for partners in industry. A password is required to access this page.<br />
<br />
Section five gives access to all the ASTM/ISO/DIN/CEC/SABS '''[[Standards and Procedures|standards and procedures]]''' that are not included in the equipment section. You will also need a password to access this page.<br />
<br />
The last section contains all the project files and documents of students who worked on the [[Diesel and Biodiesel Lubricity|diesel lubricity and biodiesel]] project. <br />
<br />
Click [ftp://tribology@ragnarok.up.ac.za/ here] to gain access to '''files on the computers in the Tribology Lab''' (A password is required.)<br />
<br />
You will find this page most useful when starting out with a new project or when you just have a problem in the lab. The aim of this site is also to log everything that happens in the lab to help create continuity between students responsible for the well-being of the lab.<br />
<br />
==Equipment==<br />
<br />
The following lubrication bench tests are available in the Tribology Lab. A hard copy of the documentation of each test rig is also available in a red file of the same number as the rig.<br />
<br />
<big>'''[[T01 FZG Machine]]'''</big><br />
<br />
Documentation for projects done on the FZG machine can be found [http://ragnarok.up.ac.za/Tribology/FZG/ here]<br />
<br />
<big>'''[[T02 Optimol SRV Machine]]'''</big><br />
<br />
Documentation for projects done on the SRV machine can be found [http://ragnarok.up.ac.za/Tribology/SRV/ here]<br />
<br />
<big>'''[[T03 BICERI Universal Wear-testing Machine]]'''</big><br />
<br />
Documentation for the projects done on the BICERI UWM can be found [http://ragnarok.up.ac.za/Tribology/BICERI_UWM/ here]<br />
<br />
<big>'''[[T04 High Frequency Reciprocating Rig (HFRR)]]'''</big><br />
<br />
Documentation, standards and test procedures regarding the HFRR can be found in this section.<br />
<br />
<big>'''[[T05 Mettler Toledo XP2003S Comparator Balance]]'''</big><br />
<br />
Documentation and areas of application can be found in this section.<br />
<br />
<big>'''[[T06 US Steel Mobility Test Rig]]'''</big><br />
<br />
Documentation and test method can be found in this section.<br />
<br />
<big>'''[[T07 Pensky Martin Closed Cup Tester]]'''</big><br />
<br />
This piece of equipment is used to determine the flash point of petroleum products. Documentation and test method can be found in this section.<br />
<br />
<big>'''[[T08 Sprayability Test Rig]]'''</big><br />
<br />
Documentation and test method can be found in this section.<br />
<br />
<big>'''[[T09 Viscosity Meters]]'''</big><br />
<br />
Documentation and test method can be found in this section.<br />
<br />
==Hip Tribology==<br />
This section includes all the projects done on hip tribology. Click on [[hip tribology]] to access the page.<br />
<br />
== Test Results ==<br />
This section contains all the test results that has been obtained for clients in industry. A password is required for access. Click on [ftp://tribology@ragnarok.up.ac.za/Tribology%20Folder%20(HFRR%20PC)/Test%20Results/ Test Results].<br />
<br />
==Standards and Procedures==<br />
<br />
[[File:Sliding.jpg|300px|right]]<br />
<br />
All the local and international standards and specifications applicable to fuels and the operation of equipment in the Tribology Lab are available here. A password is required to access the information.<br />
<br />
ASTM Standards and Specifications (Click [ftp://tribology@ragnarok.up.ac.za/Standards%20and%20Specifications/ here])<br />
<br />
EN Standards and Specifications (Click [ftp://tribology@ragnarok.up.ac.za/Standards%20and%20Specifications/EN%20Standards/ here])<br />
<br />
ISO Standards and Specifications (Click [ftp://tribology@ragnarok.up.ac.za/Standards%20and%20Specifications/ISO%20Standards/ here])<br />
<br />
SABS Standards and Specifications (Click [ftp://tribology@ragnarok.up.ac.za/Standards%20and%20Specifications/SABS%20Standards/ here])<br />
<br />
== Diesel and Biodiesel lubricity ==<br />
This section contains all the work done at the University of Pretoria, regarding diesel and biodiesel lubricity. Click on [[Diesel and Biodiesel Lubricity]] to access the page.<br />
<br />
== Tribology Library ==<br />
This section contains some of the most crucial tribology literature. Much of this literature is not available at the Merensky Library and was interlended by previous students. A file with some of the important literature is available in hard copy. A password is required to access the literature.<br />
<br />
=== Textbooks ===<br />
'''Stachowiak and Batchelor (2005) Engineering Tribology'''<br/><br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Tribology%20Textbooks/2005%20-%20Stachowiak%20%26%20Batchelor%20%28Engineering%20Tribology%29.pdf Textbook]<br />
<br />
'''Ludema (1996) Friction, Wear and Lubricity A textbook in Tribology'''<br/><br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Tribology%20Textbooks/1996%20-%20%20Ludema%20%28Friction%2C%20Wear%2C%20Lubrication%20-%20A%20Textbook%20in%20Tribology%29.pdf Textbook]<br />
<br />
=== Categories ===<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Biodiesel/ Biodiesel]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Common%20Rail%20Diesel%20Engines/ Common Rail Diesel Engines]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Contact%20Modelling/ Contact Modelling]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Contamination/ Contamination]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Diesel%20Injector%3APump%20Modelling/ Diesel Injector and Pump Modelling]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Diesel%20Lubricity%20Test%20Methods%20and%20Chemistry%20Effects/ Diesel Lubricity Test Methods and Chemistry Effects]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Experimental%20Analysis%20of%20Boundary%20Films/ Experimental Analysis of Boundary Films]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Friction%20General/ Friction General]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Humidity%20Henry%27s%20Law%20Solubility/ Humidity/Henry's Law/Solubility]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Iron%20oxides%20and%20hydroxides/ Iron oxides and hydroxides]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Lubrication%20Mechanisms/ Lubrication mechanisms]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/n-hexadecane/ n-hexadecane]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Numerical%20Procedures/ Numerical Procedures]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Presentations/ General Presentations]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Robert%20Bosch%20Patents/ Robert Bosch Patents]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/RSA%20Diesel%20Press%20%28Done%29/ RSA Diesel Press]<br />
<br />
[ftp://tribology@ragnarok.up.ac.za/Tribology%20-%20Literature/Unorganised/ Uncategorised]</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1167PH Loop2011-11-28T15:08:40Z<p>28029187: /* Connecting the pH rig to the OPTO22 system and Simulink */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/CML732_SCburd2011.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.vsd (Visio)] | [ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
=== Connecting the pH rig to the OPTO22 system ===<br />
The attachment gives details about operating the pH rig from the Simulink environment and connecting it to the OPTO22<br />
system. <br />
[ftp://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/OPTO22.pdf Document]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1166PH Loop2011-11-28T15:07:06Z<p>28029187: /* Documentation */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/CML732_SCburd2011.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.vsd (Visio)] | [ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
=== Connecting the pH rig to the OPTO22 system and Simulink ===<br />
The attachment given details about operating the pH rig from the Simulink environment and connecting it to the OPTO22<br />
system. <br />
[ftp://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/OPTO22.pdf Document]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1165PH Loop2011-11-28T15:05:07Z<p>28029187: /* Documentation */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/CML732_SCburd2011.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.vsd (Visio)] | [ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
=== Connecting the pH rig to the OPTO22 system and Simulink ===<br />
The attachment given details about operating the pH rig from the Simulink environment and connecting it to the OPTO22<br />
system. <br />
<br />
[ftp://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/OPTO22.pdf<br />
Document]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1164PH Loop2011-11-28T14:59:33Z<p>28029187: /* 2011 (Current) */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/CML732_SCburd2011.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.vsd (Visio)] | [ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Rig_Maintenance&diff=1163PH Rig Maintenance2011-11-28T14:53:26Z<p>28029187: /* 2011 */</p>
<hr />
<div>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.<br />
== Pre 2009 ==<br />
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.<br />
== 2009 ==<br />
'''Wiring/Instrumentation'''<br/><br />
[[File:Pmc02ph_instruments.JPG|300px|right|thumb|pH rig instruments showing new temp. transmitter housing and turned pH transmitter cover]]<br />
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:<br />
* I/P transducer for control valve 2 and 1 faulty. Replaced both transducers, reconnected piping and wiring.<br />
* Control valve 2 - reconnected piping.<br />
* 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.<br />
* Housing for temperature transmitters made and fitted to rig (see image).<br />
* 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.<br />
* 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.<br />
* Re-fitted pH transmitter 1 and connected a new pH probe.<br />
* 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).<br />
* 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.<br />
[[File:Pmc02ph_tankstand_before.JPG|150px|thumb|Old feed tank stand]] [[File:Pmc02ph_tankstand_after.JPG|150px|thumb|New feed tank stand]]<br />
'''Piping'''<br/><br />
Numerous leaks were fixed and connections made where piping has been scavenged off the rig.<br />
<br />
'''Structural'''<br />
* Stands for feed tanks (currently dustbins) were found to not give sufficient support when tanks are full. Constructed new feed tank stand.<br />
* 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.<br />
* Rerouted pipe connecting CV001 and FE001 - cut away some of the metal structure to remove strain from pipe.<br />
== 2010 ==<br />
'''Wiring/Instrumentation'''<br/><br />
* Several attempts were made to get the Burkert Flow meter running but there is something wrong with the power supply. It is recommended that professional help is sourced from burkert to setup the flowmeter and get it working.<br />
'''Piping'''<br/><br />
* Several random leaks were fixed. Most of these are related to hardening and brittle O-rings. The possibility of acid resistant seals should be investigated.<br />
* The acid feed pipe after the rotameter was rerouted directly into the tank. A handvalve was added before the rotameter to throttle the flow.<br />
* The piping system to load water into the tanks was changed completely. Water can now be added directly into any of the four feed drums to make the feed solutions.<br />
* The waste drum setup was changed to accomodate two drums. It is recommended that a y-fitting be inserted to the waste pipe so that both tanks fill up at the same time.<br />
'''Systems'''<br/><br />
* The pH rig computer was formatted and reinstalled with Windows 2003 Server. The license being used is a valid UP site license and should be preserved for future use. It will have to be extracted from the running system first.<br />
* Honeywell Experion was then installed on the system and set up by Honeywell engineers. The system ran for a while but the authentication went haywire before it could be fully set up. At the moment it looks like the only possibility of recovery is a full format and reinstall. The Experion license was changed during the install and the new license should be obtained from Devon Clack at honeywell if possible.<br />
* The Experion system should be run in parallel with any other control systems. Access to OPTO can be set up through the OPTO Opc Server. A graphical representation of the proposed control system can be seen [http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/ here]. <br />
* A sample setup for the OPTO Opc server can be found [http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/ here]. This includes the setup for the pH and level and flow rigs.<br />
<br />
== 2011 ==<br />
'''Increase in Reagent storage capacity '''<br/><br />
Two 100 l tanks were added to the system to increase the reagent storage capacity. The tanks were originally found <br />
to have leaks and were not fitted with manual valves. The leaks were repaired using epoxy and manual valves were fitted.<br />
The pH rig can now be operated continuously for over two hours.</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Rig_Maintenance&diff=1162PH Rig Maintenance2011-11-28T14:52:28Z<p>28029187: </p>
<hr />
<div>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.<br />
== Pre 2009 ==<br />
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.<br />
== 2009 ==<br />
'''Wiring/Instrumentation'''<br/><br />
[[File:Pmc02ph_instruments.JPG|300px|right|thumb|pH rig instruments showing new temp. transmitter housing and turned pH transmitter cover]]<br />
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:<br />
* I/P transducer for control valve 2 and 1 faulty. Replaced both transducers, reconnected piping and wiring.<br />
* Control valve 2 - reconnected piping.<br />
* 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.<br />
* Housing for temperature transmitters made and fitted to rig (see image).<br />
* 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.<br />
* 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.<br />
* Re-fitted pH transmitter 1 and connected a new pH probe.<br />
* 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).<br />
* 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.<br />
[[File:Pmc02ph_tankstand_before.JPG|150px|thumb|Old feed tank stand]] [[File:Pmc02ph_tankstand_after.JPG|150px|thumb|New feed tank stand]]<br />
'''Piping'''<br/><br />
Numerous leaks were fixed and connections made where piping has been scavenged off the rig.<br />
<br />
'''Structural'''<br />
* Stands for feed tanks (currently dustbins) were found to not give sufficient support when tanks are full. Constructed new feed tank stand.<br />
* 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.<br />
* Rerouted pipe connecting CV001 and FE001 - cut away some of the metal structure to remove strain from pipe.<br />
== 2010 ==<br />
'''Wiring/Instrumentation'''<br/><br />
* Several attempts were made to get the Burkert Flow meter running but there is something wrong with the power supply. It is recommended that professional help is sourced from burkert to setup the flowmeter and get it working.<br />
'''Piping'''<br/><br />
* Several random leaks were fixed. Most of these are related to hardening and brittle O-rings. The possibility of acid resistant seals should be investigated.<br />
* The acid feed pipe after the rotameter was rerouted directly into the tank. A handvalve was added before the rotameter to throttle the flow.<br />
* The piping system to load water into the tanks was changed completely. Water can now be added directly into any of the four feed drums to make the feed solutions.<br />
* The waste drum setup was changed to accomodate two drums. It is recommended that a y-fitting be inserted to the waste pipe so that both tanks fill up at the same time.<br />
'''Systems'''<br/><br />
* The pH rig computer was formatted and reinstalled with Windows 2003 Server. The license being used is a valid UP site license and should be preserved for future use. It will have to be extracted from the running system first.<br />
* Honeywell Experion was then installed on the system and set up by Honeywell engineers. The system ran for a while but the authentication went haywire before it could be fully set up. At the moment it looks like the only possibility of recovery is a full format and reinstall. The Experion license was changed during the install and the new license should be obtained from Devon Clack at honeywell if possible.<br />
* The Experion system should be run in parallel with any other control systems. Access to OPTO can be set up through the OPTO Opc Server. A graphical representation of the proposed control system can be seen [http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/ here]. <br />
* A sample setup for the OPTO Opc server can be found [http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/ here]. This includes the setup for the pH and level and flow rigs.<br />
<br />
== 2011 ==<br />
'''Increase in Reagent storage capacity '''<br/><br />
Two 100 l tanks were added to the system to increase the reagent storage capacity. The tanks were originally found <br />
to have leaks and were not fitted with manual valves. The leaks were repaired using epoxy and manual valves were fitted<br />
to the tanks. The pH rig can now be operated continuously for over two hours.</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1161PH Loop2011-11-28T14:47:04Z<p>28029187: /* Piping & Instrumentation diagrams */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/CML732_SCburd2011.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.vsd (Visio)] | [ftp://ragnarok/publicftp/lab/Rigs/02_pH/2011/Diagram/02pH_P&ID_2011.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1160PH Loop2011-11-28T14:42:52Z<p>28029187: /* Current/Previous projects */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/CML732_SCburd2011.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1159PH Loop2011-11-28T14:41:47Z<p>28029187: /* Current/Previous projects */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/CML732_SCburd2011.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1158PH Loop2011-11-28T14:39:43Z<p>28029187: /* 2011 (Current) */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/CML732_SCburd2011.pdf/ Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1157PH Loop2011-11-28T14:37:25Z<p>28029187: /* Current/Previous projects */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/CML732_SCburd2011.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1156PH Loop2011-11-28T14:34:19Z<p>28029187: /* Current/Previous projects */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/SHAUN_BURD_2011_CML_732_Project_Report.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1155PH Loop2011-11-28T14:33:22Z<p>28029187: /* 2011 (Current) */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/SHAUN_BURD_2011_CML_732_Project_Report.pdf.pdf /Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1154PH Loop2011-11-28T14:32:32Z<p>28029187: /* 2011 (Current) */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/SHAUN_BURD_2011_CML_732_Project_Report.pdf.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187http://chemeng.up.ac.za/wiki/index.php?title=PH_Loop&diff=1153PH Loop2011-11-28T14:29:49Z<p>28029187: /* Current/Previous projects */</p>
<hr />
<div>[[File:Pmc02ph_rig.JPG|500px|right|thumb|The pH control rig]]<br />
PH control is a difficult problem due to the highly non-linear nature of the system. The steep slope of the titration curve around the pH = 7 point amplifies pH variations for even small base/acid addition variations. The pH control rig in the [[PMC lab]] illustrates that pH control is by no means impossible (albeit on a laboratory scale).<br />
<br />
== Current/Previous projects ==<br />
=== 1999 ===<br />
F.J. Botha, '''Ondersoek van die Dinamiese Gedrag van Sisteme waar pH Gemeet en Beheer word''' {Investigation of the Dynamic Behaviour of Systems where pH is Measured and Controlled}<br/><br />
[Hard copy of report available in pH rig folder]<br />
=== 2003 ===<br />
T. Leeuw & G. Mascini, '''pH Rig 2003 - CPL780 Process Control Laboratory'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2003/CPL%20Lab%20Report%20-%20pH%20Rig%202003%20.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2003/ Project files]<br />
=== 2005 ===<br />
A.J. Swanepoel & M. Swanepoel (Botha), '''Model Based Control Laboratory, pH Control'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2005/CML%20732-%20M%20&%20AJ%20Swanepoel.doc Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2005/ Project files]<br />
=== 2007 ===<br />
C. Steyn, '''Fuzzy Logic Rule-Based Controller Design, Neutralization of Strong Acid with Strong Base'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2007/pH_Control_CWSteyn.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2007/ Project files]<br />
=== 2009 ===<br />
A.H. Campher, '''Maintenance, Modelling and Control of the pH-control Rig'''<br/><br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2009/CML732_Report_AH_Campher_2009.pdf Report] | [http://ragnarok.up.ac.za/Rigs/02_pH/2009/ Project files]<br />
=== 2010 ===<br />
A.B. De Jongh, '''Control of a pH neutralisation system using Gain Scheduling '''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2010/pH/CML732_Report_AB_deJongh_2010.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/ Project files]<br />
<br />
=== 2011 (Current) ===<br />
S.C. Burd, '''Non-Linear Model Predictive Control of a pH Neutralization Process'''<br/><br />
[http://ragnarok.up.ac.za/publicftp/lab/Rigs/02_pH/2011/SHAUN BURD 2011 CML 732 Project Report.pdf Report] |<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2011/ Project files]<br />
<br />
== Documentation ==<br />
Large scale renaming of instruments, valves and tanks is being done. This renders all previous rig diagrams obsolete. Only 2009-updated diagrams should henceforth be used.<br />
=== Piping & Instrumentation diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_P&ID_2010.pdf .PDF]<br />
<br />
=== Wiring diagrams ===<br />
[http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/2010/02pH_WiringDiagram_2010.pdf .PDF]<br />
<br />
== Rig maintenance ==<br />
The maintenance of the pH rig is documented [[PH Rig Maintenance|here]].</div>28029187