Instrumentation
Abstract
Instrumentation is used here to mean both the use of measuring instruments to monitor and control a process (sensors), and the equipment used to achieve control (actuators). This chapter focuses on the layout of the equipment (sensors and actuators) used to control a process. Online sensors are connected to process vessels, equipment, or piping to provide immediate continuous measurements of process conditions used to control the process. Poor layout of online instruments can have serious consequences for process stability. Off-line sensors are often housed in enclosures on the plant, or contained in a laboratory.
Keywords
Instrumentation; sensors; actuators; process control
36.1 General
The term “instrumentation” ...
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