Valve Test Monitoring

Partial valve stroke testing is an alternative to periodically testing critical ESD valves without completely stroking them, which typically means a disruptive process shutdown. As part of its HART diagnostic data, the DVC6000 sends digital information on the HART loop when a partial valve stroke test is in progress, and if the ESD valve is stuck. Mounted transparently on the HART loop, the HIM continuously monitors this data. When a valve stroke test is initiated, the HIM sends an alarm trip to confirm that the test is in progress. Should the valve be stuck shut, the HIM sends a second alarm to alert personnel.