12 of 24 Jun 2001
Contents
Contents
Agilent 6890 Gas Chromatograph Service Manual
500 Site Preparation
510 Environmental
Temperature and humidity ranges............................................................ 1
Ventilation requirements............................................................................ 1
Venting oven exhaust ......................................................................... 1
Venting toxic or noxious gases ......................................................... 2
Benchtop space requirements................................................................... 2
520 Gases
Gas requirements ........................................................................................ 1
Gases for packed columns................................................................. 1
Gases for capillary columns .............................................................. 2
Gas purity............................................................................................. 4
The gas plumbing ........................................................................................ 5
Supply tubing for carrier and detector gases .................................. 6
Two-stage pressure regulators.......................................................... 7
Pressure regulator-gas supply tubing connections......................... 7
Traps..................................................................................................... 8
Cryogenic cooling requirements ............................................................... 9
Choosing a coolant ............................................................................. 9
Using carbon dioxide........................................................................ 10
Using liquid nitrogen ........................................................................ 12
Supplying valve actuator air .................................................................... 13
530 Power
Grounding .................................................................................................... 1
Line voltage.......................................................................................... 1
USA fast heating oven ........................................................................ 2
Canadian installation.......................................................................... 3
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