Valve Diagnostics

With the DVC7K digital valve controller’s enhanced memory,

it is able to provide a comprehensive library of valve

diagnostic alerts, as shown in Figure 3. These diagnostics

and recommended actions are easily accessed with an

Emerson handheld communicator or from the LUI. When

installed as part of a HART communicating system, the

DVC7K delivers prompt notification of current or potential

equipment issues directly to the asset management system

and supports NAMUR NE107 alert categorization.

Alerts assist in identification and notification of the

following situations:

• Stroke open and/or stroke close degradation

•Valve travel deviation identifies stuck valves that don’t

make full travel

• Cycle count / Travel Accumulator

• Various instrument mechanical and electrical issues

Leverage an Emerson handheld communicator to view the

instrument Event Log which stores alerts in memory on

board the DVC7K, view graphical data, and quickly identify

the stroke open and stroke close times.