Control and Instrumentation articles from July 1995

Control and Instrumentation archives from July 1995

Gas detection: from canaries to HART, and from pellistors to infrared detectors - gas detectors are coming on.
July 1, 1995... What do HART (the open digital field comms protocol) and the canary have in common? Well, in the world of gas detection, the answer is 'quite a lot'! Quite simply, both have been used in the detection of, and protection against, Carbon Monoxide...

Fluid level: what's new in sensing?
July 1, 1995... With some 10 technologies for level sensing, each still being developed in its application spectrum, 'smart' is making its mark As Alan Balcombe of Vega said in our December 1994 level survey introduction (page 19), 'For those that think...

Level technology is getting smarter. (level measurement systems)
July 1, 1995... Reducing the cost of operation and maximising efficiency Selecting a level measurement system now includes considering the cost of installation and operation, and optimisation of process monitoring through integration. To this end,...

PLC software and standards making. (includes related article)
July 1, 1995... With open systems supposedly among the top few requests on users' wish lists, IEC 1131-3 is coming on The dream of open systems and interoperability continues to dominate users' wish lists, we're told. And, in the world of PLC software - and...

Goal setting for safety: risk evaluation and CRINE in the North Sea. (Cost Reduction Initiative for the New Era)
July 1, 1995... Meeting safety and environmental goals on process plants can also lead to economic advantages. To explain this, a simplified example of the development of a small gas and condensate reservoir in the North Sea is used. It demonstrates that safety,...

Smart positioners: just how smart are they?
July 1, 1995... Intelligent valve positioners have a lot to offer; but don't be taken in - they're not necessarily better just because they're digital The value of electronics in control valve positioners is still hotly debated in instrumentation today. Many...

Check systems automatically. (control systems)(includes related article)
July 1, 1995... A development from Sweden offering fully automated safety-critical system validation is said to be demostrating huge savings A breakthrough which will lead to the development of much lower cost, bug-free safety-critical control systems that was...