Operating in CI Mode 5
5977B Series MSD Operating Manual 129
The Open and Closed states are shown in the monitors as Open and Closed
respectively.
Figure 42 Reagent gas flow control module schematic
Gas A
(methane)
supply
Gas B
(other)
supply
Gas A
select valve
Gas B
select valve
MFC
Calibration
valve
Restrictor
Calibration
vial
Shutoff
valve
GC/MSD
interface
GC column
CI
source
Table 1 3 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%
Shutoff valve Open Open Open Open Open Closed
To Next Page
Loading...
Need help?
General
