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III. NORMAL OPERATION: SAMPLE DRAW MODE
The instrument may also be operated in a sample draw mode where the
internal pump is disabled and the air is drawn through the instrument by an
external pump. This mode is used for calibrating sample draw instruments.
To enter the sample draw mode, press the SELECT switch when the flow
status screen is displayed.
When the flow set screen appears, adjust the flow to read 0.0 LPM.
The ppm output screen will then read 000 ppm. You will be unable to set
the ppm until the sample draw instrument has been attached to the outlet
hose and a stable flow rate has been established. While the instrument
is waiting for the sample draw unit to be attached, it will display the flow
stabilization screen.
Flow: 0.5 lpm
SELECT to change
0.2 to 1.0 lpm
set . . . 0.0 lpm
Stabilize flow..
Flow: 0.000 lpm
