54 Agilent 7697A Troubleshooting
4 Leaks
The test displays information for the current stage, for
example, the flow path being tested and the setpoint and
actual pressure or flow readings.
To stop the test, press [Clear] during a purge step
(monitor the HS display). Otherwise, the test continues
until it passes or fails.
See “If the test passes” or “If the test fails”.
5 After the test passes, restore the instrument to operating
condition.
If the test passes
If the test passes all stages, the sampling system is leak free.
If still experiencing leak- like symptoms:
• Check the transfer line.
• Check the interface to the GC.
• If not already done, check the GC. The HS leak test
cannot test for leaks in the GC.
If the test fails
If the test fails, the display provides:
• The reading for the stage that failed (for example, leak
rate or flow rate).
• Command lines to toggle related valves (for example, a
switching valve or the six port valve).
SV1 or SV2 or PV1 or PV2: Scroll to this line and press
[On/Yes] to turn on (energize) the valve, or [Off/No] to
turn it off.
Six-port valve: Scroll to this line and press [On/Yes] to
switch the valve to the load position, or [Off/No] to switch
it to the inject position.
• A selection to exit the test.
Exit test?: Select this line then press [On/Yes] to abort the
test.
• A failure code
See the sections below for troubleshooting information for
each stage of the test.
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