I was recently asked to optimise some loops in a petrochemical plant. Most of the time when doing this sort of work, improvements are the order of the day, and I normally go home at the end of the day ...
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Earlier articles in this series discussed the roles played by the P, I and D sections of controllers used in industry. In this article Michael Brown talks about the manner in which these blocks may be ...
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Optimisation of regulatory control systems is not easy. It is also time consuming and hard work. There are generally no short cuts. Many people often do not realise this, and are always seeking for a ...
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In July this year Michael Brown is holding a series of his well-known courses on practical process control in Johannesburg. The courses are unique and are invaluable to both novices and highly experienced ...
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In this issue Michael Brown has forwarded an interesting article submitted by Melvin Jones who graduated from the University of Pretoria as a chemical engineer. He has a keen interest in process control ...
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During the two-day practical part of a course held recently in a large South African chemical plant, it was found that none of the valves had positioners on them. This is very unusual these days. The ...
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Michael Brown is holding a series of his well-known courses on practical process control in February in Johannesburg. The courses are unique and are invaluable to both novices and experienced practitioners ...
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Although this is appearing in the middle of the current series of loop signatures on digital controllers, I felt that it would be nice to have a change and write another article on some of the more interesting ...
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In the previous article in this series, it was shown that the main problem with the P only controller is the fact that it is not capable of eliminating offset between setpoint and process variable (PV) ...
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Michael Brown is holding a series of his well-known courses on practical process control in November in Johannesburg. The courses are unique, in that they are beneficial to both novices and highly experienced ...
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Michael Brown is holding a series of his well-known courses on practical process control in July in Johannesburg, and August in Durban. The courses are unique, in that they are beneficial to both novices ...
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In the far distant past when I first started my own business we specialised in automating plants mainly on gold and platinum mines. Even inexperienced as I was in those days, I soon realised that the ...
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