Gas Detectors & Sensors

Reliable, gas detection devices with 50+ different gas sensor choices.

Designed for use in almost every type of application, Critical Environment Technologies’ low voltage gas detectors feature 4-20 mA analog, 0-10 volt, BACnet® MS/TP RS-485 or Modbus® RTU RS-485 digital output with 1, 2 or 3 gas channels in a water / dust tight, corrosion resistant enclosure. For specialized applications we have gas detectors for vent line applications, sample draw systems and an explosion proof product line for use in hazardous rated areas.

Choose from 50+ toxic, combustible and refrigerant gases including Ammonia, Carbon monoxide, Carbon dioxide, Chlorine, Ethylene, Ethylene oxide, Formaldehyde, Hydrogen, Hydrogen fluoride, Hydrogen sulphide, Nitric oxide, Nitrogen dioxide, Oxygen, Ozone, Sulfur dioxide, Ethanol, Dimethyl ether, Methanol, Methane, Propane, Hydrogen, TVOCs, R134A, R410A, RSF6 and more.

Let us help you find the gas detector you need to monitor the target gas in your application.

Filters

Replacement Plug & Play Smart Sensor Boards for CGAS-A, CGAS-D, CGAS-AP and CGAS-DP models. 

For monitoring: Carbon dioxide (CO2) / R744

For monitoring: Refrigerants

For monitoring: Ammonia, Carbon monoxide, Carbon dioxide, Chlorine, Ethylene, Ethylene oxide, Formaldehyde, Hydrogen, Hydrogen fluoride, Hydrogen sulphide, Nitric oxide, Nitrogen dioxide, Oxygen, Ozone, Sulfur dioxide, Ethanol, Dimethyl ether, Methanol, Methane, Propane, Hydrogen, TVOCs, Refrigerants

For monitoring: Ammonia, Carbon monoxide, Carbon dioxide, Chlorine, Ethylene, Ethylene oxide, Formaldehyde, Hydrogen, Hydrogen fluoride, Hydrogen sulphide, Nitric oxide, Nitrogen dioxide, Oxygen, Ozone, Sulfur dioxide, Ethanol, Dimethyl ether, Methanol, Methane, Propane, Hydrogen, TVOCs, Refrigerants

For monitoring: Carbon dioxide, Carbon monoxide, Formaldehyde, Methane, TVOCs, Particulates, RH & Temperature, Refrigerants

For monitoring: Acetylene, Hydrogen, Methane, Propane, TVOCs

For monitoring: Ammonia, Carbon dioxide, Carbon monoxide, Nitrogen dioxide, Oxygen, Hydrogen chloride, Hydrogen sulphide, Sulfur dioxide, Methane, Propane, Hydrogen, Acetylene, Butane, Ethanol, Heptane, Hexane, Isopropyl alcohol, Toluene, Pentane, Ethylene, Diesel fuel vapour

For monitoring: Ammonia, Carbon monoxide, Nitrogen dioxide, Chlorine, Oxygen or Sulphur dioxide

For monitoring: Carbon monoxide, Nitrogen dioxide, Methane, Propane, Hydrogen

For monitoring: Carbon monoxide, Nitrogen dioxide, Methane, Propane, Hydrogen, TVOCs

For monitoring: Carbon monoxide, Nitrogen dioxide, Methane, Propane, Hydrogen, TVOCs

For monitoring: Carbon dioxide, Hydrocarbons, Methane and jet fuel vapours