MSA Worldwide
Portable Gas Detector
The Altair 4 Multigas Detector received EU toxic gas approval on Dec. 19, 2008, as performance compliant for measurement of 0-200 ppm hydrogen sulfide gas and 0-999 ppm carbon monoxide gas. Test conditions used appear in standards EN 45544-1:1999 and EN 45544-2:1999. This unit for lower explosive limit, carbon monoxide, hydrogen sulfide, and oxygen is the only portable gas detector with an optional MotionAlert feature, which is useful should a user become disabled due to unforeseen hazards.