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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Hysteresis and Deadband
The “Hysteresis and Deadband” display box shows the Average and Maximum values from the test for the combined
hysteresis and deadband. The positioner does not separate the hysteresis from the deadband.
Repeatability
The “Repeatability” display box shows the Average and Maximum values from the test for the repeatability of the system.
+/- Linearity Error
The “+/- Linearity Error” display box shows how closely the system follows a best fit straight line to a response.
Monitors
The “Monitors” box shows information regarding the status of the test. Start Time shows the time of day when the test
was started. Elapsed Time shows the real time that has passed since the test process started. The Data Acquisition Prog-
ress shows the progress of the test.
Position Settling Time
The “Position Settling Time” box has a field to select the proper time settling between steps.
The three buttons between the settings and the graph control how the data is shown.
Control Signal
The
Control Signal button shows all of the signals relative to time on the X axis during the signature test.
HDR
The
HDR button sets the graph to show the position on the X axis with the corresponding calculated hysteresis + dead-
band and repeatability values.