Range Error Description; Signal Error Description; Calibration Error Description - GE Moisture Image 1 Series Service Manual

June 2003
Range Error
Description
Signal Error
Description
Calibration Error
Description
2-28
Range Errors occur when an input signal that is within the capacity of
the analyzer exceeds the calibration range of the probe. The Series 1
displays Range Errors with an
message.The error condition extends to all displayed measurements
of that mode. For example, if dew point displays
moisture in ppMv will also display
In addition, since several moisture modes (such as %RH, ppMv,
ppMw, and MMSCF) are dependent on more than one input to
calculate their results, some modes can generate an error opposite to
the initial error. For example, %RH is dependent on moisture and
temperature.The nature of the %RH calculation is such that low
temperatures result in a high %RH. Therefore, it is possible for
Under Range
temperature to read
If multiple Range Errors occur simultaneously, the meter responds to
them in the following order:
1.Oxygen Errors
2.Moisture Errors
3.Temperature Errors
4.Pressure Errors
Signal Errors occur when an electrical fault causes a measurement
signal to exceed the capacity of the analyzer electronics. The Series 1
displays Signal Errors with a "
in this message is replaced by one of the available measurement
modes.
A Calibration Error indicates a failure of the internal reference during
Auto-Cal. During Auto-Cal, internal reference components are
measured and compared to factory calibration values. Each reference
is read repeatedly and the value measured is compared to a table of
acceptable values. Any deviation from the factory values is calculated
and corrected. Should a reference fall outside the acceptable range, a
Cal Error
message appears.
It is possible for one mode to fail Auto-Cal while the others continue
to operate. Only the failed mode will display a
Auto-Cal errors are indicative of a channel card fault.
Over Range Under Range
or
Over Range,
Over Range.
Over Range.
while %RH reads
Mode" Fault!
message. The "Mode"
Cal Error.
Troubleshooting and Maintenance
then
Usually,