Checking Total Column Flow - ABB PGC2000 Operation And Service Manual

Checking Total Column Flow

To check column flow using a 10-port sample valve and an 8-port selector valve, perform the
following steps (other valve configurations use similar procedures):
1. Turn all valves off as described in the previous paragraph.
2. See Figure 2-6. To check total column flow, set Valves One and Two to ON.
3. Connect the flow-measuring device to the CELL VENT of the detector cell and measure the flow
rate. The total column flow should be as specified in the Data Package. s If necessary, adjust the
COLUMN PRESSURE regulator to obtain the specified flow rate.
CARRIER
IN
COLUMN
PRESSURE
ADJ
PI
AIR OUT
ANALYTICAL
FLOW ADJ
2000-OSM, F1
AIR IN
VALVE "ON"
SAMPLE
VENT
1 6
2
7
SAMPLE
IN
3
8
4 9
10
5
COLUMN 1
BACKFLUSH
SAMPLE
VENT
LOOP
Figure 2-6. CHECKING TOTAL COLUMN FLOW
AIR OUT
SELECTOR
FLOW ADJ
COLUMN
2
COLUMN
3
AIR IN
VALVE "ON"
6
1
2 7
3
8
4
9
10
5
DETECTOR
SELECTOR
VENT
CELL
VENT
2-11