Fluke 975 AirMeter - Calibrating the CO Sensor; Calibrating the CO₂ Sensor

AirMeter
TM
Test Tool
Calibration
21
7. Apply the calibration gas mixture of CO and CO2.
Press 2[OK] or 3[Cancel] to exit calibration.
8. When finished, remove gas and press 3 [OK].
Enter the time to next calibration date. Use
1[DOWN] and 2[UP] to change the number
and 3[ENTER]to store the number.
The calibration procedure is complete.
Calibrating the CO Sensor
To calibrate the CO sensor:
1. With the calibration cap on, press L, R, and
S simultaneously for 3 seconds to enter
calibration mode.
2. Press 1 [Yes] to initiate the calibration procedure
or press 3[Cancel] to exit calibration mode.
3. Press 1[CO]. The Meter zeros the CO sensor. If
desired, press 3[Cancel] to abort Meter
calibration.
4. Use 1[DOWN] and 2[UP] to change the gas
concentration (ppm). Press 3[ENTER]to enter the
concentration level.
5. The Meter prompts to apply the CAL Gas. Attach the
mixed CO and CO
2
calibration gas canister to the
Meter via the supplied hose or press 3 [SKIP] to
exit.
6. The Meter calibrates the CO sensor. Press 3 to
cancel. When finished, remove gas and press 3
[OK]. Enter the time to next calibration date. Use
1[DOWN] and 2[UP] to change the number
and 3[ENTER]to store the number.
Note
When either CO or CO
2
sensors are calibrated,
the calibration date is reset by the user.
CO calibration is now complete and the Meter exits
calibration mode.
Calibrating the CO
2
Sensor
To calibrate the CO
2
sensor:
1. If not already in calibration mode, with the calibration
cap on, press L, R, and S simultaneously
for 3 seconds to enter calibration mode.
2. Press 1 [Yes] to initiate the calibration procedure
or press 3[Cancel] to exit calibration mode.
3. Press 2[CO
2
].
4. Specify one-point or two-point calibration methods.
The one-point method uses CAL gas only. The two-
point method uses CAL gas and also Neutral gas
(Nitrogen).