ALTAIR 5X/ALTAIR 5X IR
GB
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Finishing Sucessful Calibration
(1) Remove the calibration tube from pump inlet.
The calibration procedure adjusts the span value for any sensor that passes the cal-
ibration test. Sensors that fail calibration are left unchanged.
In the ALTAIR 5X IR, a combustible IR sensor calibration causes the catalytic com-
bustible sensor to enter the LockAlarm condition.
- While an device with a % Vol methane IR sensor automatically recovers from
LockAlarm, % Vol propane and butane devices do not; for these devices, the
LockAlarm state is cleared by turning the device off, then on while in a fresh air
environment [→ chapter 3.2 for details]
After a sucessful calibration, 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
The monochrome display does not show √ symbols 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.
A √ symbol displays on the MEASURE page.This √ symbol appears on the:
- colour display in the upper feature bar
- monochrome display in the lower-right corner.
The √ symbol shows for 24 hours after the calibration.
Calibration with the Galaxy Test System
The device can be calibrated using the Galaxy Automated Test System - contact
MSA for a list of compatible gases and concentrations.
Similar to the successful [manual] calibration described in chapter 3.8, a √ symbol
displays on the MEASURE page after successful Galaxy calibration.
If the horn alarm is turned OFF, the calibration √ symbol does not ap-
pear on the colour display.
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