Calibration

The ALTAIR 5X can be calibrated either manually using this procedure or automatically using the GALAXY or GALAXY GX2 test stand. Refer to Calibration .

The use of the demand regulators listed in Ordering Information 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.

WARNING! 

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).

Failure to follow these warnings can result in serious personal injury or death.

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.