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when the operation engineer told you that he gives the
control valve order to open but there is no response !
what will you do ?
and if you found that there is astuck , what will you do ?
(note : it is apanumatic valve )

Question Posted / 808

Answer Posted / 808

Simulate 4-20mA it with a DMM at control valve. If it works
there, then check wiring.

Is This Answer Correct ?    1 Yes 3 No



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