We have DVC6030 positioner installed on Bettis rotary valve , after calibration valve is responding good in closing with difference max. 1-2%
bun doesn't opening good ,difference exceeds 10-15 %
positioner was calibrated several times with calibration complete message , but same behavior .
please Advise
In reply to Stanley Amirthasamy:
In reply to Ismail Ramadan: