What component of process control instrumentation systems converts one instrumentation signal type into another type?
A) Alarm
B) Control valve
C) Transducer
D) Valve positioner
Answer: C
Explanation: A) Incorrect. An alarm is an instrumentation that provides visual and/or audible cues that alert technicians of a condition outside the normal operating range, such as a tank reaching capacity.
B) Incorrect. A control valve is the final component of a control loop, operated either remotely or by hand, that receives its signal from the controller and manipulates the process variable in response to a system disturbance or change.
C) Correct. A transducer converts one instrumentation signal type into another type.
D) Incorrect. A valve positioner is a device that ensures a valve is positioned properly in reference to the signal received from the controller.
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