GE Moisture Image 1 Series, Service Manual, Page: 53 / 107

Troubleshooting and Maintenance 2-21
June 2003
Calibrating the Delta F
Oxygen Cell
You should calibrate the Delta F Oxygen Cell when you initially
receive it. After that, calibrate the oxygen cell once a month for the
first three months, and then as needed. You should also calibrate the
oxygen cell if you change the electrolyte.
Calibrating the oxygen cell involves three parts:
•
displaying the oxygen content in PPMv and µA
•
checking the oxygen cell calibration
•
entering the new span value
Displaying the Oxygen
Content in PPMv and µA
1. Determine to which channel the Delta F Oxygen Cell is
connected.
2. If you are not displaying oxygen data in the Matrix Format, switch
the screen as described in
Setting Up the Matrix Format in
Chapter 2 of the Programming Manual .
3. At Main Menu, press the SELECT menu key.
4. Press the PAGE menu key. At the Display Page # prompt, enter
the page number and press [ENT].
5. Press the MODE menu key. A list of measurement modes appears
on the message line (see Table 2-6 on the next page).
6. Press the PLACE menu key to move the larger pointer to the box
you want to change.
7. Move the brackets to OXY and press [YES].
8. Press the UNITS menu key. A list of measurement units appears
on the message line.
9. Move the brackets to O
2
/ppM and press [YES].
10. Enter the desired channel number.
Note: A “Channel Not Installed” message appears if you select a
channel where no channel card is installed. Select a different
channel.
Repeat Steps 3 through 10 to display µA in a different matrix box. To
exit, press the DONE menu key until Main Menu appears on the
message line. Then continue to the next sub-section.