Agilent Technologies 5975 User Manual

112 5975 Series MSD Operation Manual for MassHunter
4 Operating in Chemical Ionization (CI) Mode
The shutoff valve prevents contamination of the flow control module by
atmosphere while the MSD is vented or by PFTBA during EI operation. The
MSD monitors will reflect On as 1 and Off as 0 (see Table 17).
Figure 21 Reagent gas flow control module schematic
Gas A
(methane)
supply
Gas B
(other)
supply
Gas A
select valve
Gas B
select valve
Mass
flow
controller
Calibration
valve
Restrictor
Calibration
vial
Shutoff
valve
GC/MSD
interface
GC column
CI ion
source
Table 17 Flow control module state diagram
Result Gas A flow Gas B flow Purge
with Gas A
Purge
with Gas B
Pump out
flow module
Standby,
vented, or EI
mode
Gas A Open Closed Open Closed Closed Closed
Gas B Closed Open Closed Open Closed Closed
MFC On
 setpoint On  setpoint On  100% On  100% On  100% Off 0%

Agilent Technologies 5975 Specifications

General

Brand	Agilent Technologies
Model	5975
Category	Laboratory Equipment
Language	English