Agilent Technologies 6890 Series - Page 290

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Jun 2001
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Electron Capture Detector (ECD) 340
Theory of operation
makeup gas and anode purge flows. The makeup gas line sweeps past the end
of the column and carries the column effluent into the ECD cell.
Figure 340-3 Manual ECD flow diagram
Pressure
regulator
On/off
solenoid
valve
Restrictors
Vent
Capillary adapter
Restrictors
On/off
solenoid
valve
Anode
purge and
makeup
gas in
63
Ni plating