Calibration - MSA ALTAIR 5X Operating Manual

3.10

Calibration

The ALTAIR 5X can be calibrated either manually using this procedure or automatically using the
GALAXY or GALAXY GX2 test stand. Refer to chapter 9.5.
The use of the demand regulators listed in chapter 8 is recommended. If a new sensor has been
installed, the battery pack has been depleted or a new battery pack has been installed allow sensors
to stabilize for 30 minutes before calibration is performed.
Special conditions with toxic gases!
If the device is to be checked or calibrated for reactive gases, prerequisites are required; otherwise,
incorrect calibration would result in incorrect device operation.
Reactive toxic gases (e.g., chlorine, ammonia, chlorine dioxide) have the property of diffusing into
the rubber and plastic tubes so that the volume of test gas available in the device would no longer
be sufficient to correctly perform device calibration.
When calibrating the device with toxic gases, certain prerequisites are required, otherwise incorrect
calibration could result:
- A special pressure regulator
- Shortest possible connection tubes between the pressure regulator and the device
- Connection tubes made from a material that does not absorb the test gases (e.g., PTFE).
NOTE: If using normal tubes and pressure regulators, expose them to the required test gas for an
extended time period. Keep these materials dedicated for use with that test gas only; do not use them
for other gases.
For example, for chlorine, allow the entire contents of a test gas cylinder to flow through the pressure
regulator and tubes before using to calibrate the device. Mark these materials for use with chlorine
only.
WARNING
ALTAIR 5X/ALTAIR 5X IR
Operation
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