Teledyne CEA-9001 - Digital, hand-held, flue gas analyzer - Manual (Page 19)

Before pressing the mbar/hPa key,
pull the air tube off the instrument!
The draft sensor is calibrated
(0.00 InW or hPa).
Carefully replace the air tube.
Wait until the measured value has
stabilized.
Record themeasured draft value.
This value is stored with the current
measuring values.
The measuringmodeiscontinued.
Attention:
No pressure values Exceeding
( 150 hPambar)!
Note:
For draft Measurement, connect air tube to the positive (+)
connector only.
±
60 inches of H O 2
±
16