Flowserve ValveSight Diagnostics User Manual
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ValveSight Diagnostics for HART User Manual FCD VSENSF0001-02-AQ 03/15
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flowserve.com
View Signals vs. Command
The
View Signals vs. Command button sets the graph to show the command on the X axis with the corresponding signals. If
a bi-directional signature has been taken, it shows both the sets of signals relative to the command.
View Friction/Thrust
The
View Friction/Thrust button calculates the friction in the valve based on the pressures measured during the signature
test. This friction is independent of the friction calculation which is shown in the Valve Health screen.
Data Management
At the bottom of the screen there are buttons to manage the signature data. You can
Save the data to a file, or Load
(retrieve) a previously stored signature from a file for viewing.
7.2 Step Test
Step Tests are a powerful tool for bench testing valves in a shop or installed valves that are not in service and can be fully
or partially stroked. By stepping the valve with a known step size and monitoring the response, you can note changes
over time and pinpoint problems that are developing or existing.