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Multi-Gas Detectors Multigas w/ PID - Photoionization Detectors
Multigas w/ CO2 - Carbon Dioxide Detectors Replacement Sensors, Parts, and Accessories
Portable multigas monitors are vital in protecting personel from the hazards of toxic and combustible gases in confined space entries and potentially dangerous work environments. 
Sometimes refered to as gas tech meters, gas meters, gas sniffers, and explosive meters.
Typical sensor options include detection of LEL or combustible gas (methane, LPG, hexane, propane), carbon monoxide (CO), hydrogen sulfide (H2S), and oxygen (O2) deficiency / enrichment.  A long list of other gases are detectable, some specialty sensors are-
PID (Photo Ionization Detector), used measure volatile organic compounds and other gases in concentrations from parts per billion (ppb) to parts per million (ppm) 
NDIR (Non-dispersive Infrared) or IR (Infrared), used to measure CO2 (0-5%), some combustible gases (LEL 0-100% and/or LEL %Vol)


Depending on your specific application or needs, you can choose the appropriate gas detector and sensor combinations.  If you are in need of help, please do not hesitate to contact us for assistance or guidance in choosing the proper gas detector.