© 2020 All rights reserved. Data subject to change without notice.
43
Rev. B | 2020.07
cGas Detector Analog Transmitter - Operation Manual
The factory default calibration gas concentrations are:
GAS TYPE
RANGE
CALIBRATION GAS LEVEL
Carbon Dioxide (CO
2
)
0 - 5,000 ppm
1,000 PPM
Carbon Dioxide (CO
2
)
0 - 5% vol
1.0 % VOL
* subject to change when required
9.2.2 Zero (Null) Calibration
Use nitrogen (N
2
) to zero a CO
2
sensor. To exit the Zero Calibration at any time,
press ENTER.
Flow the nitrogen gas for 4 minutes before entering the Calibrate Zero menu.
From the main display, press ENTER.
Enter passcode 3032 using the UP button and ENTER button.
Enter Password
3032
Press ENTER to access the Calibrate Menu.
Calibrate Menu
Press Enter
Selected Channel
CO2
Press the UP button to find Calibrate Zero.
Calibrate Zero
100 AD
Attach the regulator to the cylinder of nitrogen, insert the calibration adapter
into the sensor opening on the front of the enclosure door (refer to Section
9.3.1
Calibration Adapter Plug Doesn’t Fit
if the adapter will not fit).
Press ENTER to start the Zero calibration. The display will show a countdown
from 20 seconds.
Zeroing
47AD
18s