Caused by the failure of the valve positioner amplifier

Clogging of the orifice valve positioner amplifier failure, the amplifier gain is too large. Former output changes slowly, which make the control system resonance phenomenon. Thus, the fault processing method is to check and clear the amplifier orifice, when the amplifier gain is too large, can be reduced to the clamping the reeds ball stretch or replacement amplifier.high temperature solenoid valve
The valve positioner detection lever does not match the result of failure
Valve positioner detection lever does not match the result of increased dead zone can not be correct and timely to reflect the valve position feedback signal. Therefore, the deterioration of the quality control of the control system. The Troubleshooting method is to check and re-install the feedback sensing rod.standard air cylinder