Processes calling for low flows usually require a high degree of precision which, in turn, depends on the final element of the control loop, ie, the control valve. This paper demonstrates the difficulties as well as the interest for accurate sizing of low-flow control valves and shows how a new solution solves the problem.
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References
1.
ANSI
2.
ISA
3.
Handbook for Control Valve Sizing, Masoneilan
4.
IEC Standards
5.
534 – 1
6.
534 – 2
7.
Instrumentation industrielle. Ed. Technique et documentation MM. Chaouloff, Engrand, Richard, Rossmann. Volume 2, Partie 2 by M. Chaouloff
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Process Instruments and Controls Handbook Considine, McGraw-Hill Edition 1977. Final controlling elements (section 19) by P. Wing
