Maintaining the Instrument
User Information 155
4 Tighten or reconnect the carrier gas connection at the
transfer line. Open the shutoff valve to pressurize the carrier
flow path. The Carrier (PSI) should recharge within a
minute.
5 Open the lid. The sample probe disengages from the leak test
vial. The Vial (PSI) should drop to almost 0 psi within 1
minute.
6 Turn off the carrier shutoff valve at the back of the
Headspace Sampler.
7 Print Table 19. Record the time and initial pressure values in
the table.
8 Allow 5 minutes to pass. Record the final time and pressure
values in Table 19. Carefully close the lid of the sampler so
the sample probe enters the leak test vial.
A pressure decay of more than 2 psi over 5 minutes indicates a
leak. If there is a leak, call an Agilent service representative.
Press the Clear key to end the leak test.
Tabl e 19 Pressure decay test part 4B
Final time Initial time Difference
Time 5 minutes
Flow path Initial pressure Final pressure
Carrier
medium_standard.book Page 155 Tuesday, February 17, 2004 10:14 AM
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