Agilent Technologies G7035A Operation Manual page 103

Gas A
(methane)
supply
Gas B
(other)
supply
Figure 16 Reagent gas flow control module schematic
Table 18 Flow control module state diagram
Result Gas A flow
Gas A Open
Gas B Closed

MFC On setpoint
Shutoff valve Open
The Open and Closed states are shown in the monitors as 1 and 0 respectively.
5977 Series MSD Operation Manual
Gas A
select valve
Gas B
select valve
Purge
Gas B flow with Gas A
Closed Open
Open Closed

On setpoint On
Open Open
Operating in Chemical Ionization (CI) Mode
Mass
flow
controller
Calibration
valve
Restrictor
Calibration
vial
Purge
with Gas B
Closed
Open
 
100% On 100%
Open
CI ion
source
Shutoff
valve
GC/MSD
interface
GC column
Standby,
Pump out vented, or
flow module EI mode
Closed Closed
Closed Closed
 
On 100% Off 0%
Open Closed
4
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