AQ EXPERT Instruction & Operations Manual
Version 1.13
Page 32 of 63
Press the
CALIB
key and have the cursor (reverse color) point to
“Zero Gas Sensors”:
Press the
OK
key to execute a Zero cycle of all the gas sensors while the instrument is
running in ambient air. This procedure should last 60 seconds.
At the end of the zero period the AQ Expert reads the output of all gas sensors (with the
exception of the CO
2
sensor) and sets them all to zero, with the exception of the
Oxygen (O
2
) that it sets to 20.9%.
If no error messages appear at the end of the countdown, place the AQ CAL-ZF into a
sealable bag to prevent moisture from entering it and proceed with your measurements.
ZERO THERMOCOUPLE
: This calibrates the one external thermocouple input (T1) to
ambient temperature.
Be sure the Thermocouples being testing are at room temperature before Calibrating
To start the zero procedure, press the
CALIB
key and select
ZERO Thermocouples
.