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Sensor Poisons/Inhibitors; Maintenance; Sensor Accuracy Test - Honeywell IAQPoint2 Technical Manual

Indoor air quality monitor
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IAQPoint2

Maintenance

The built-in ABC algorithm makes maintenance unnecessary in normal environments�
Cleaning
Clean the case and the touchscreen by wiping gently with a soft cloth dampened only with water�
Do not allow water to enter the monitor's case� Do not spray any liquids on the touchscreen or the
case� Do not use harsh or abrasive cleaning solutions on the touchscreen or the case�

Sensor accuracy test

To test the CO
sensor, apply 1000 ppm of CO
test gas
4
� The sensor should read ±30 ppm ±5% of
2
2
the test gas specification� This equates to 1000 ppm ±80 ppm ± of the test gas specification�
There is no accuracy test for VOC sensors�

Sensor poisons/inhibitors

Silicone is one of the major chemicals that has an adverse effect on VOC sensors� It forms a layer
on top of the sensitive material, thus limiting the accessibility of the sensor surface� When this
happens, sensitivity can be reduced drastically� The effect of this on the monitor's performance
could be severe� The monitor would be unable to recover from this condition� There are no poisons
or inhibitors for the CO
sensor�
2
VOC sensors can be affected by rapid transitions in relative humidity�
4 part no� M-501010
49

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