INFICON T-Guard Leak Detection Sensor - Manual (Page 59)

Operation
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Enter an additional trigger leak rate.
This setting strongly influences the measurement, if enabled. For instance, you can
extend the displayed range upwards by setting the trigger limit 2 to the five-fold value
of the trigger limit 1.
Possible values: 5E-6 mbar l/s to 9.9E-2 mbar l/s.
Default setting: 2E-5 mbar l/s.
Trigger level 2
→ Enabled
Enables the use of the additional reject leak rate.
Default setting: Disabled.
Main menu
→ Calibration →
Leak rate ext. Proof leak
Enter the leak rate for verifying the calibration.
Possible values: 5E-6 mbar l/s to 9.9E-2 mbar l/s.
Default setting: 2E-5 mbar l/s.
Start Test Function
Connect a leak with the proof leak rate to check the calibration. In this procedure, the
calibration factor is only checked but not written newly. The proof leak rate may
deviate from the test leak rate and therefore, it has to be input separately.
Test Leak Rate
Enter the leak rate for checking the calibration.
Possible values: 5E-6 mbar l/s to 9.9E-2 mbar l/s.
Default setting: 2E-5 mbar l/s.
Start Calibration
Use a leak with a calibration leak rate and start the calibration. For a successful calib-
ration, the determined calibration factor must be between 0.2 and 5. If the calibration
factor is between 0.2 and 0.5, or 2 and 5, a warning will be output, however, also after
the confirmed calibration.
Main menu
→ Settings →
Measurement settings
→ He concentration
Here, you can set the helium concentration in the test sample which is applied for
filling. T-Guard™ changes the automatic measuring time accordingly and displays
the real leak rate of the leakage.
Possible values: 10% to 100%.
Default setting: 100%.
Measurement settings
→ Standby time
If the T-Guard™ Leak Detection Sensor is not in use within this time frame, it will
switch to Standby mode automatically.