Servomex SERVOTOUGH LaserExact 2950, Operator'S Manual

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SERVOTOUGH LaserExact Monitor, Operator Manual 02950001A_1
OPERATION
51
Fault message Explanations and actions
« Low line position »
« High line position »
« No absorption line »
ERROR
The instrument has detected a spectroscopic fault. This
can have several causes:
1) Unknown interference gas in process,
2) Incorrect laser temperature (wavelength).
3) The cabinet is operating outside acceptable
temperature range, or
4) Laser malfunction.
Check the instrument with a gas concentration suitable
for calibration, and allow it to run continuously for > 70
minutes. If error does not disappear or calibration is
significantly wrong contact service personnel.
« Saturation of direct » ERROR
The photo-detector is saturating or transmission is >
130%. If the error remains when the receiver window is
obscured, this is an electronic fault. Otherwise the error
may occur after replacement of laser module or receiver
electronics. Reduce receiver amplification (if possible) or
transmission. If the problem cannot be solved contact
service personnel.
« Saturation of harm. » ERROR
A second harmonic signal is saturating. This may be for
one of the following reasons:
1) The gas concentration is too high. Reduce the
amplification for the second harmonic signal in the
receiver (contact service personnel for details).
2) If the error remains when the receiver window is
obscured, this is an electronic fault. Contact service
personnel.
All other error
messages
Write down all the LCD messages and contact service
personnel.
Table 5-2: Instrument LCD error messages