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© 2020 All rights reserved. Data subject to change without notice.
cGas Detector Analog Transmitter - Operation Manual
Rev. B | 2020.07
Zero Success
56AD
When the process has finished and the Zero calibration was accepted, press
ENT
ER and use the UP button navigate to Exit and press ENTER to exit. Remove
the cylinder of gas. If the Zero calibration was not successful refer to Section
9.3.2 Zero Fault
.
9.2.3 Span Calibration
Span calibration is flowing a known concentration of the target gas over the
sensor to adjust the output signal to match the gas concentration. It resets
the sensor’s electronic circuit against a known concentration of target gas to
correct drift and keep linearity.
NOTE:
To exit the Span Calibration at any time, press ENTER.
When calibrating a CO
2
sensor, flow the span gas for 4 minutes before entering
the Calibrate Span 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
Use the UP button to find Calibrate Span. Press ENTER.
Calibrate Span
4000 AD
Confirm the span calibration gas level. It is important to make sure that the
span gas level value matches the calibration gas concentration you are using to
calibrate the sensor. Press ENTER to confirm value is correct. (If the value is not
correct, press the UP button to move the cursor to N and press ENTER. Change
the cal gas level using the UP and ENTER buttons.)