Agilent Flowmeter ADM1000
6
Operating Instructions
Low Battery Indicator
When the LOWBAT symbol is displayed, replace the battery.
(We recommend a standard 9V alkaline battery.) Install it by
removing the battery cover on the back of the case. Change the
battery and replace the cover.
Reading and Setting a Split Ratio
Turn the unit on by briefly pressing the on/split button. Con-
nect the flexible tubing from the ADM1000 to the GC column
gas flow
*
. When the reading stabilizes (1-2 seconds), briefly
press the on/split button. (Note: The display will show an error
message if the flow being measured is less than 0.5 mL/min.)
The reading is now stored in memory, and the display will read
1:1 . Disconnect the flexible tubing from the GC column flow
and connect it to the split vent. The display will now read the
ratio directly. The exact ratio can be dialed in by simply adjust-
ing the flow of the split vent until the required ratio is
displayed.
Typical display sequence for setting a 50.0:1 split ratio with a
2 mL/min column flow.
Returning to Single Flow
To return to single flow operation, briefly press the on/split
button.
* Accurate column flow rates can only be determined when detec-
tor gases have been turned off.
2.00 mL
1.00:1
50.0:1
