145
Agilent 7890 Series Gas Chromatograph
Advanced Operation Manual
Agilent Technologies
4
Columns and Oven
About the Oven 146
Oven safety 146
Configuring the Oven 147
Cryogenic Operation 148
Cryogenic setpoints 148
About Oven Temperature Programming 150
Programming setpoints 150
Oven ramp rates 151
Setting the oven parameters for constant temperature 152
Setting the oven parameters for ramped temperature 152
About the Oven Insert 154
Selecting the correct packed glass column type 155
About the column modes 155
Select a column mode 156
Setting the column parameters for constant flow or constant
pressure 157
Enter a flow or pressure program (optional) 157
Programming column pressure or flow 158
About Columns 155
Backflushing a Column 159
Backflushing when connected to an MSD 160
Nickel Catalyst Tube 165
About the nickel catalyst tube 165
Nickel catalyst gas flows 165
Setting temperatures for the nickel catalyst tube 166
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