Agilent Technologies 4890 - Page 20

18 Installing Rotary Valves
Installing Rotary Valves
Column
Carrier
Out
Sample
In
Loop
OFF
ON
Detector
or 2nd
valve
Gas sampling with backflush to detector
Out
In
Sample 2
Carrier
Loop 2
Out
In
Sample 1
Loop 1
Detector
or 2nd Valve
OFF
ON
Gas sampling of alternate streams