Leak Calibration (Comp/Cal) 8-3
8.2 Performing a Leak Rate Calibration
To perform a calibration a suitable standard leak or flow device is required that is
traceable to National Standards. It is advisable to have 2 standard leaks of a given
value to allow one to be sent for calibration while the other remains in use. Before
starting any calibration procedure, the user must have set and optimized the test
parameters to achieve good discrimination between acceptable and leaking
components, (refer to Section 7.0). This should be carried out in standard pressure
decay units and the results from these tests are used to assist in the calibration
procedure.
8.2.1 Calibration Test Program Setup
1. Select Program Mode.
2. Select Program.
3. Select Comp Cal Data option and enter the following values:
Comp Control: On
Cal Control: On
Flow Units: Select the leak master flow units.
Leak Format: Select the required format.
Leak Value: Enter the leak master flow value.
4. Select Run Mode.
Comp Test
1. Select Cycle Type.
2. Select Comp and press Start button to enter value.
3. Select Run mode to exit menu.
4. Connect a known good component to the test port.
5. Ensure leak master is removed from calibration port.
6. Press Start button to perform the Comp test cycle.
7. Select Cycle Type.
8. Select Save to save new Comp value.
9. Select next required cycle type and press Start to enter value.
10.Select Run mode.
Changing some of the Calibrate Menu parameters affects associated Reject
Level settings.Care should be taken to ensure that correct Reject Levels are set
after a Calibrate Menu parameter is changed.
Any previous calibration data is cleared when the Start button is pressed. A pass
output indicates the test was successfully completed and Cal test can be
performed. An Abort or Reject result indicates an invalid test which must be
investigated and resolved before continuing.
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