Installation manual

97
Agilent 5975 Series MSD
Operation Manual
Agilent Technologies
4
Operating in Chemical Ionization (CI)
Mode
General Guidelines 98
The CI GC/MSD Interface 99
To Operate the CI MSD 101
To switch from the EI source to the CI source 102
To pump down the CI MSD 103
To set up the software for CI operation 104
To operate the reagent gas flow control module 106
To set up methane reagent gas flow 109
To use other reagent gases 111
To switch from the CI source to the EI source 115
CI Autotune 116
To perform a PCI autotune (methane only) 118
To perform an NCI autotune (methane reagent gas) 120
To verify PCI performance 122
To verify NCI performance 123
To monitor high vacuum pressure 124
This chapter provides information and instructions for operating the
5975 Series CI MSDs in Chemical Ionization (CI) mode. Most of the
information in the preceding chapter is also relevant.
Most of the material is related to methane chemical ionization but one section
discusses the use of other reagent gases.
The software contains instructions for setting the reagent gas flow and for
performing CI autotunes. Autotunes are provided for positive CI (PCI) with
methane reagent gas and for negative CI (NCI) with any reagent gas.