240 Programmed Temperature Vaporization Inlet (PTV)
Leak testing
40 of 46
Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Figure 240-25 Capping the bottom of the inlet and septum purge vent
Note Ma ke su re t ha t t he c ar rie r ga s sou rc e pr es su re is at le ast 35 ps i. C ar ri er s ou rce
pressure should always be at least 10 psi greater than the desired inlet
pressure.
Performing the leak test
Note Be sure to complete all of the preparation steps on page 39 before continuing.
1. Set the inlet to “Split Mode.”
2. Configure the column as 0 length.
Press [Config] [Column 1] or [Config] [Column 2] and enter
“0” in the first column of the “Dim” field.
3. Set the inlet’s Total Flow to 60 mL/min.
Press [Front Inlet] (or [Back Inlet]) and enter “60” in the “Tot
flow” field.
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