© 2022 All rights reserved. Data subject to change without notice.
59
Rev. B | 2022.03
LPT-M - Operation Manual
Attach the regulator to the cylinder of zero air, insert calibration adapter into the
sensor opening on the front of the enclosure door (see Section 7.3.1 Calibration
Adapter Plug if the adapter will not fit). Press Enter to start the Zero calibration.
The display will show a countdown from 18 seconds.
When the process has finished and the Zero calibration was accepted, press
ENTER to Exit and remove the cylinder of zero gas. Refer to Section 7.3.3 Zero -
Requires Override if the Zero calibration was not successful.
NOTE:
After 5 minutes of inactivity, the display will return to the normal
operation.
Step 2
Set 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.
The factory default calibration gas concentrations are:
SENSOR GAS TYPE
CALIBRATION GAS LEVEL
Carbon Monoxide (CO)
100 ppm
Nitrogen Dioxide (NO
2
)
5 ppm
Combustibles
20% LEL
In the Sensor Configuration Menu (passcode 3032), press either ARROW key
to scroll through the menu and select the channel you want calibrate. Press
