Practical Process Control for Engineers and Technicians
By Wolfgang Altmann

2.3: Listing of Common Measured Variables

2.3 Listing of Common Measured Variables

In descending order of frequency of occurrence, the principal controlled variables in process control systems comprise:

  • Temperature

  • Pressure

  • Flow rate

  • Composition

  • Liquid level.

Sections 2.4 through to 2.6 of this chapter list and describe these different types of transducers, ending with a methodology of selecting sensing devices.

Copyright IDC Technologies 2005 under license agreement with Books24x7
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