Scion Instruments 436-GC - Electronic Flow Control Type 25

Page: 144
436-GC/456-GC
730 Electronic Flow Control
SCION Instruments
436-GC/456-GC Service Manual Revision B February 2019
Electronic Flow Control Type 25
The EFC25 is almost identical as the EFC21 the only exception is that the
pressure is monitored at the module itself rather than at the Injector. This allows
the EFC25 to be used with Gas or Liquid Sample Valve’s and Purge and Trap
devices upstream from the Injector.
Optimized use:
 For Valved systems, Purge Trap systems, headspace
 Flow & Pressure control
 Use with split/splitless/PTV injectors
EFC25
GC Control
Injector
Flow Control Unit
Septum
Purge
Digital Flow Control
Carrier
Gas inlet
Septum
Purge Valve
CMOSens
®
Gas/
Liquid
Pencil
Sample
Filter
* Valve
or other
devices
Pressure Control Unit
P -sensor
Split Valve
Pencil
Split
Line
Filter*
Digital Pressure Control
Back Pressure
Controller
vent
Column