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WIKA operating instructions pneumatic high pressure controller, model CPC7000
0019104001D 10/2018EN
EN
6. Operation
6.4.12 Leak Test Application
Leak test on a pressure line or device under test can be performed by the user with this application. The user defines
a leak by setting the Dwell Delay and the Dwell Time, Delta and Setpoint parameters. The leak test is initiated by
pressing the Start button.
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Dwell Delay: The amount of time that the controller remains at the Setpoint before the test begins.
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Dwell Time: The amount of time that the controller is monitoring the pressure change.
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Delta: The change in pressure during the test that determines a pass or fail result.
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Setpoint: The controlled pressure at which the test begins.
If the change in pressure exceeds the Delta parameter before the allotted time in the Dwell Time parameter, then the Leak Test App
will return a red status indication showing initial, final and the actual difference (Delta) in pressure recorded, and indicate a “failed”
test. Otherwise it will return a green status indication showing that the delta was not exceeded for the Dwell Time, indicating a
“passed” test. See Figure 6.4.12-A for examples of a failed and a passed test.
Figure 6.4.12 Leak Test App
Figure 6.4.12-A Leak Test Fail (left) and Pass (right)
