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control valve in manual/auto mode huntting checked spring
tention also it is ok.positioner also good condition &
incoming inst air line also constant pr.kindly give us
correct answer?
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Answer Posted / ashish namdev
Kindly check these following :-
1. first check positioner link spring.
2. adjust link assembly.
3. adjust instrument air at valve specified pressure
through AFR.
4. check all parameters and settings in positioner.
5. give auto calibration command and calibrate it.
6. Tune your controller.(gain, PID controlling)
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