GD-70D - 118 -
<Reading Abnormalities>
Symptoms Causes Actions
The reading rises (drops for
oxygen) and stays there.
Perform a zero adjustment (AIR adjustment).
Presence of interference gas.
Disturbances by interference gases, such as
solvents, cannot be eliminated completely. For
information on actions, such as installing a
removal filter, please contact RKI.
A very small amount of the gas to be detected
may be leaking (slow leak). Because ignoring it
may cause dangers, take a remedial measure,
i.e., taking actions the same as those for the gas
Perform a zero adjustment (AIR adjustment).
In particular, the galvanic cell type is affected by
A gas alarm is triggered even
though gas is not present.
Presence of interference gas.
Disturbances by interference gases, such as
solvents, cannot be eliminated completely. For
information on actions, such as installing a
removal filter, please contact RKI.
Turn off and restart the detector.
If such a symptom is observed frequently, take
appropriate measures to eliminate the noise.
environment.
When the environment (temperature, etc.)
changes suddenly, the detector cannot adjust to
it. In some cases, the detector triggers an
indication alarm.
Because the detector cannot be used under
sudden and frequent environmental changes,
you must take any preventive actions to
Replace the dust filter as described on page
114.
Bent or clogged inlet or
exhaust line.
Condensation in the inlet
line.
Deteriorated sensor
sensitivity.
Replace the sensor unit as described on page
112.
Improper calibration gas
concentration.
Use the proper calibration gas.
Deteriorated sensor
sensitivity.
Replace the sensor unit as described on page
112.
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