Tag: instrumentation for control systems

  • 6.4 Other types of instruments

    So far we have just looked at instruments that sense, control, and influence process variables. Transmitters, controllers, and control valves are respective examples of each instrument type. However, other instruments exist to perform useful functions for us. 6.4.1 Indicators One common “auxiliary” instrument is the indicator, the purpose of which is to provide a human-readable indication of…