MSA ALTAIR 5X PID Operating Manual page 47

If a sensor is nearing its end-of-life, the "PASS" display is followed by the Sensor Life indicator
♥ display.
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While the sensor is still fully functional, this warning gives the user time to plan for a replacement
sensor to minimize downtime.
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The ♥ indicator blinks as the device returns to Measure mode.
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After 15 seconds, the blinking stops, but the ♥ indicator continues to display during ongoing oper-
ations as a reminder of a sensor's pending end-of-life.
If a span calibration fails:
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The Sensor Life Indicator ♥ blinks to show a sensor has reached its end-of-life and should be
replaced.
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The device remains in the Sensor Life alarm condition until the
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After the alarm is cleared, the device enters Measure mode and the Sensor Life indicator ♥ blinks
during ongoing operations until the sensor is replaced and/or successfully calibrated.
Span calibration can fail for reasons other than a sensor at the end of its life. If a span calibration failure
occurs, verify items such as:
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sufficient gas remaining in the calibration cylinder
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gas expiration date
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integrity of calibration tubing/fittings, etc.
Reattempt the span calibration before replacing the sensor.
Finishing Successful Calibration
(1) Remove the calibration tube from pump inlet.
The calibration procedure adjusts the span value for any sensor that passes the calibration test.
Sensors that fail calibration are left unchanged.
On the color display, each successfully calibrated sensor temporarily shows a √ symbol at its gas
reading.
These √ symbols remain visible for a few moments and are then replaced by the present gas reading.
Since residual gas may be present, the device may briefly go into an exposure alarm after the calibra-
tion sequence is completed.
Press the button to reset the alarm as necessary.
Following a PID sensor calibration, VOC gas readings may be slightly elevated (< 5 ppm) for several
minutes. This is normal behavior as the isobutylene is purged from the device.
A √ symbol displays on the MEASURE page.This √ symbol appears on the:
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color display in the upper feature bar
The √ symbol displays for 24 hours after the calibration and then turns off.
If the horn alarm is turned OFF, the calibration √ symbol does not appear on the color
display.
ALTAIR 5X PID
Operation
button is pressed.
US
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