O&M Manual v2
Page 20
Once the value drops below this number, the output relay (Output relay #5) will turn OFF.
5.4.2
Calibration Procedures
From the home screen, press the menu button, then the sensor calibration button, which will take you to the
first image seen in
. Hit the next button and then the 2 Point Calibration Menu and then select
which device you would like to calibrate. O2 PPM, Max O2, and PSI sensors are the three devices you can
calibrate. Calibration may be required for several reasons. One reason could be moving the unit from a lower
geographical elevation to a region with a higher geographical elevation (different part of the country, or
world). The oxygen sensor has an expected life time of > 900,000 oxygen % hours and should also be
verified for accuracy at least once per year.
Figure 10: Calibration Screen
To calibrate the O2 PPM to read the Neutronic 7100 Analyzer installed inside the unit, you’ll need to obtain
two readings, preferably with at least a 100 ppm spread. Click into the “O2 PPM 2-Pt Calib Screen” and get a
reading of the PPM level on the 7100 analyzer once it’s stable. Write that value down and immediately look
on the “O2 PPM Sensor Calibration Screen” and write down the “Raw Value” seen in the gray box (
). Now do the same thing once the PPM level has changed at least 100 PPM and stable. Once those values
are recorded, enter them into the corresponding boxes on the “O2 PPM Sensor Calibration Screen”.
