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Infrared Gas Analyzer Maintenance
Teledyne Analytical Instruments 105
Error
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Error Contents Probable Cause
Error No.5 Amount of zero calibration
(indication value) is over 50% of
full scale.
• Zero is deflected much due to dirty
cell.
• Detector is faulty.
• Optical balance is out of adjustment.
Error No.6 Span calibration is not within the
allowable range.
Error No.7 Amount of span calibration
(difference between indication
value and calibrated
concentration) is over 50% of full
scale.
• Span gas is not supplied.
• Calibrated concentration setting does
not match cylinder concentration.
• Zero calibration was performed
incorrectly.
• Dirty cell.
• Detector sensitivity has deteriorated.
Error No.8 Measured values fluctuate too
much during zero and span
calibration.
• Calibration gas is not supplied.
• Time for flowing calibration gas is too
short.
Error No.9 Calibration is abnormal during
auto calibration.
• No. 4 to No. 8 Error occurred during
Error No.10 Output cable connection is
improper.
• Wiring is detached between analyzer
and interface module.
• Wiring is disconnected between
analyzer and interface module.
When errors No. 1 and No. 10 occur, the analyzing block error
contact is closed. When errors No. 4 to No. 9 occur, calibration error
contact is closed.
When an error occurs, the error number message will appear at the
offending channel. The screen below shows that error No. 9 has
occurred on Channel 1.