Agilent Technologies 6890 Series Service Manual page 82

Gas chromatograph

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Note the "Actual" reading on the display and monitor the pressure for

You can use the stopwatch feature of the 6890 GC to monitor the time.

the time and the pressure reading with the

When the system is considered leak tight, the caps may be removed, the

column reinstalled, its dimensions configured at keyboard, and the

desired pressure or flow rate set.

Time] and then [Enter

If there is less than 0.7 psi pressure loss (0.07 psi/min.), consider

the system leak tight.

If pressure loss is much greater than 0.7 psi, there is a leak that must

be found and corrected. See Correcting leaks later in this section.

Agilent 6890 Gas Chromatograph Service Manual

Purged/Packed Inlet

Leak testing—EPC and manual inlets

to start timing, then toggle between

and the [Front

Troubleshooting

6890a 6890 plus