Fluke Calibration 4322-SYS-NAVAIR, Руководство по обслуживанию

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Controller Maintenance
Maintenance Procedures
4
4-5
Pressure Leakage Test
Leak Test is a function of the Controller that checks the Controller and UUT connection
for pressure leaks. To detect leaks, the Controller generates pressure and monitors the
rate of pressure change over a specified time period. The total change in pressure (dP)
and average rate of change is shown on the Leak Test menu and stays on the menu until
the test is reaccomplished. See Table 4-3 for a list of leak test parameters.
To test for a leak:
1.
Connect the male end of the test hose to the female
TEST
port on the Controller.
2. Connect female end of the test hose to the male
QC adapter
on the UUT.
Note
A leak test can be done without a UUT connected to troubleshoot the
Controller.
3. Navigate to and select

on the bottom of the Main menu. The Leak Test
menu opens.
4. Enter the leak test time in seconds into the
Leak Time
field.
Note
The leak test menu contains an Average Rate, dP (pressure change),
and Time values. These values are leak test result values and are not
adjustable settings. When the menu opens, the values shown are from
the last test completed and will update after the leak test is complete.
5. Navigate to and select

to start the leak test.
6. If the leak rates are excessive, search for a leak path around the adapter fittings first.
To search for leaks, use a spray bottle with a mixture of water and diluted soap to
spray on the fittings. If a there is a leak, bubbles from the soap visually show where
the leak is. See Figure 4-1.
Table 4-3. Leak Test Parameters
Parameter Description
Leak Time Amount of time to run the leak test.
Average Rate Shows the average rate of change of pressure for the test completed.
Measured in units for each second.
dP Shows the total change in pressure for the test completed.
Time Shows the length of time the test ran.