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7.2 Replacing and Recalibrating Moisture Probes
For maximum accuracy you should send moisture probes back to the factory for recalibration every six months to one
year, depending on the application. Under severe conditions you should send the probes back for recalibration more
frequently; in milder applications you do not need to recalibrate probes as often. Contact a GE applications engineer for
the recommended calibration frequency for your application.
When you receive new or recalibrated probes, be sure to install and connect them as described in "Configuring the
Probes" on page 57. After you have installed and connected the probes, enter the calibration data as described in
"Calibrating the Probes" on page 64. Note that each probe has its own Calibration Data Sheet with the corresponding
probe serial number printed on it.
You do not have to enter calibration data for the Moisture Image Series Probes (
or in the case of the original
However, you should verify that the calibration data entered at the factory is correct (see "The Probe Configuration
Screen" on page 58). If you sent only the sensor part of the original Moisture Image Series probe to GE (without the
module), you must enter the calibration data manually.
7.3 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 steps:
•
Displaying the oxygen content in PPMv and µA
•
Checking the oxygen cell calibration
•
Entering the new span value
7.3.1 Displaying Oxygen Content in PPMv and µA
1. Determine the channel to which the Delta F Oxygen Cell is connected.
2. If you are not displaying oxygen data, configure the channel as described in "The Probe Configuration
Screen" on page 58.
Note: A "Channel Not Installed" message appears if you select a channel where no channel module is installed.
Select a different channel.
moisture.IQ User's Guide
MIS
probe, both the sensor and the electronics module to the factory for recalibration.
Chapter 7. Maintenance
MISP
) if you returned the
MISP2
probe,
87
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