6 Operating in CI Mode
To Operate the Reagent Gas Flow Control Module
140 7000/7010 Series TQ GC/MS Operating Manual
2 Use the parameters in the CI Reagent Gas Control area to control reagent gas
flow.
CI Gas A - Selects Methane as the reagent gas.
CI Gas B - Selects the gas connected to the B inlet on the gas flow controller
as the reagent gas.
CI Gas Flow - Enter percent of maximum volumetric flow for the selected
reagent gas. The actual % transmitted by the flow controller is shown next
to this entry. A good value for PCI is 20%, and 40% is a good value for NCI.
Set - Opens the selected reagent gas supply valve and controls the reagent
gas flow to the entered setpoint.
Off - Turns off the reagent gas flow.
Purge - Opens the selected reagent gas valve for 6 minutes to clear the
system of unwanted compounds.
Pumpout - Closes both reagent gas valves for 4 minutes, and evacuates the
system of reagent gases. At the end of the pumpout time, the selected
reagent gas valve opens.
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