MSA ALTAIR 5X Manual De Uso página 35

• While the sensor is still fully functional, this warning gives the user time to plan for a replacement sensor to minimize
downtime.
• The ♥ indicator blinks as the device returns to Measure mode.
• After 15 seconds, the blinking stops, but the ♥ indicator continues to display during ongoing operations as a reminder
of a sensor's pending end-of-life.
If a span calibration fails:
• The Sensor Life Indicator ♥ blinks to show a sensor has reached its end-of-life and should be replaced.
• The device remains in the Sensor Life alarm condition until the ▲ button is pressed.
• 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:
• sufficient gas remaining in the calibration cylinder
• gas expiration date
• integrity of calibration tubing/fittings, etc.
4. Reattempt the span calibration before replacing the sensor.
4.10.3 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.
In the ALTAIR 5X IR, a combustible IR sensor calibration causes the catalytic combustible sensor to enter the LockAlarm
condition.
• While a device with a % Vol methane IR sensor automatically recovers from LockAlarm, propane and butane IR
devices do not; for these devices, the LockAlarm state is cleared by turning the device OFF, then ON while in a fresh
air environment (→
On the color display, each successfully calibrated sensor temporarily shows a Psymbol at its gas reading.
These P symbols remain visible for a few moments and are then replaced by the present gas reading.
The monochrome display does not show Psymbols for individual gas readings.
Since residual gas may be present, the device may briefly go into an exposure alarm after the calibration sequence is
completed.
2. Press the p button to reset the alarm as necessary.
A √ symbol displays on the MEASURE page. This Psymbol appears on the:
• color display in the upper feature bar
• monochrome display in the lower-right corner.
The √ symbol displays for 24 hours after the calibration and then turns off.
NOTE: If the horn alarm is turned OFF, the calibration √ symbol does not appear on the color display.
Calibration with an Automated Test System
The device can be calibrated using the GALAXY or GALAXY GX2 Automated Test System - contact MSA for a list of
compatible gases and concentrations.
Similar to the successful (manual) calibration described in
after successful GALAXY or GALAXY GX2 calibration.
US
4.2 Turning ON and Fresh Air
ALTAIR 5X / ALTAIR 5X IR
Setup).
Calibration, a √ symbol displays on the MEASURE page
4.10
4 Operation
35