Answer Posted / Anupam Chaudhary
A Positioner is an instrument used in process control applications to monitor and adjust the position of a valve or other actuator. Here are some key features:n
1. Proportional Band (PB): The range over which the output signal changes in response to an input change.
2. Gain (or proportional gain): The factor that determines the speed of the output's response to an error signal.
3. Output Signal: Typically a 4-20 mA current or 0-10 VDC voltage, which is used to control the actuator.
4. Sensing Element: A device that measures the position of the valve or other actuator.
5. Adjustments: Parameters like proportional band and gain can be adjusted to fine-tune the control system.
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