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B-1-3. Flammable Cross-Sensitivity
note
The flammable sensor requires O
concentration will drop with low levels of O
•
There is variability in sensor cross-sensitivity between methane and other
flammable compounds. Therefore, if the detector is calibrated to methane,
the reading when other flammable gases are detected will be subject to
variation.
•
For more accurate detection of non-methane gases, the detector should be
calibrated to the targeted gas desired. In this instance, the reading obtained
when methane is detected may be subject to inaccuracy.
Warning
the flammable sensor's sensitivity can be adversely affected by exposure
to certain substances called "poisons". sulfur compounds, phosphorus
containing compounds, halogens, silicone or lead containing compounds are
example of such poisons. Every effort should be made to avoid exposure to
these substances. When the detector is exposed to such substances, a check
should be performed on the flammable sensor to verify its accuracy and a
calibration performed if necessary.
Extended exposure of the detector to certain high concentrations of
flammable gases stress the flammable detector element, which can seriously
affect its performance. if an alarm occurs due to high concentration of
flammable gases, recalibration should be performed, or if needed, the sensor
replaced.
do not expose the detector to electrical shock and/or severe mechanical
shock. When the detector is exposed to such shocks, a check should be
performed on the sensors to verify accuracy (and a calibration performed if
necessary).
44
to properly operate. Display
2
.
2
X4 Series
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