Flowserve ValveAnalysis - Manual (Page 11)

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ValveAnalysis Diagnostic Software Module FCD VLENIM0113-01 – 1/06
flowserve.com
4.2 HRL Test
The HRL Test consists of three measurements: Control Signal, HDR (Hysteresis, Deadband, and Repeat-
ability), and Linearity. Graphs of these measurements can be viewed by clicking on the corresponding
tab above the graph shown in the lower part of the screen. The HRL test consists of two full strokes,
during which the device will be placed in digital mode.
When the HRL Test button is clicked under Available Tests, the Hysteresis, Repeatability and Linearity
Test information pane will be displayed at the bottom of the screen.
The following items are always visible at the top part of the HRL test pane, above the graphs:
Elapsed time:
Indicates the total time required to acquire all data needed to plot the signature.
Status:
Indicates the current status or progress of the test. The statuses are as follows:
Ready- The system is ready to start the test.
Stabilizing- Before starting a signature it takes a few seconds to “stabilize” the actuator.
Acquiring Data…- After Flowserve ValveAnalysis has determined the valve is stable it will begin the
ramp test. The status field will show “Acquiring Data…” from the start to the finish of the change in
command signal.
Completed- The test and calculations have been completed.
Start button:
Clicking this button starts the test. When Start is clicked, the following warning box appears:
“Setting Device in Digital Mode. The device will not respond to DCS or analog controller until test
completes. Continue?”
Click Continue to begin the test or Cancel to return to the test pane.
At the conclusion of the ramp signature test, the following prompt will appear: “Save current test?”
to which the user can choose Yes or No. If the user selects Yes, the default directory will appear.
The default directory is the one selected using the Set Default Directory… command under the File
menu. The naming format of the file is structured so that the tests will be stored in chronological
order: YYYY-MM-DD-HR-MM.
Example: 2005-09-07-08-25 is 2005-September, 07 at 8:25 AM.
Abort button:
This button aborts the test and returns the device to analog mode. It becomes active once the test is
started.