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Technical Information
Table 10 Leak Detector Operating States
Display
Calibrating
Test
Fine Test
Hold
Roughing
Std Leak
Vented
Table 11 Leak Detector Condition States
Display
Backing
Both Filaments/ No
Emission
Cal OK
Calibration Prep
Filament 1 No Emission
Filament 2 No Emission
Filament Wait
Flashing C On
Exponent Display
Agilent Helium Leak Detector User Manual
Description
Indicates that the leak detector is currently performing a calibration routine.
Indicates that the leak detector is in Test mode. When in Test mode, the Test Port valve opens
and the leak detector is ready for leak testing. Test leak rate range is 1E-4 to 1E-8 (MDL 5E-9).
Indicates that the leak detector is in Fine Test mode. When in Fine Test mode, the test port
valve opens and the leak detector is ready for fine leak testing. Fine Test leak rate range is 9E-7
to 1E-11 (MDL 5E-12).
Indicates that the leak detector is in Hold mode. When in Hold mode, all but the foreline valves
are closed, isolating the test port and any test objects or fixturing from the leak detector
vacuum system. Use Hold when you want to keep the test port under vacuum without venting
the test volume; this helps the system clean up.
Indicates that the leak detector is currently performing a Roughing level evacuation of the test
port and any attached test objects or fixturing attached to the test port.
Indicates that the optional internal calibrated leak standard valve is open and that the leak
detector is reading the leak value.
Indicates that the test port is vented to atmosphere. The test port and all objects attached to
the test port are isolated from the leak detector internal vacuum system.
Description
Indicates that the leak detector is momentarily backing the foreline of the high vacuum pump
during an extended rough period. Backing occurs if the roughing time is greater than 60
minutes or if the turbo pump is not ready.
Indicates that no filament emission is detected. This can result from a PCB or cable problem,
or burned out filaments.
Indicates that the calibration routine was executed successfully.
Indicates that the leak detector is preparing for a calibration routine.
Indicates that filament 1 of the ion source has burnt out. Filament 2 automatically lights if it is
still good, and a flashing C appears in the leak rate exponent, indicating that a calibration
routine is required.
Indicates that filament 2 of the ion source has burnt out. Filament 1 automatically lights if it is
still good, and a flashing C appears in the leak rate exponent, indicating that a calibration
routine is required.
Indicates that the system is lighting the filament.
Indicates that the leak detector requires calibration.
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