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Belimo is the global market leader in the development, production, and sales of field devices for the energy-efficient control of heating, ventilation and air-conditioning systems. The focus of our core business is on damper actuators, control valves, sensors and meters

Gas Monitoring Systems for Vehicle Emissions

Demand-based ventilation provides a safe clean environment and keeps energy costs in check. The most important source of indoor air pollution is the internal combustion engine. Among several toxic components, carbon monoxide is the most hazardous. Carbon monoxide is produced by gasoline and propane powered vehicles but to only a small degree in diesel engines. To measure and control the various toxins in diesel exhaust the most reliable indicator is nitrogen dioxide.

Gas monitoring - Combustible Gases

These catalytic bead type sensors feature a poison filter which reduces the risk of damage and prolongs life expectancy to up to 10 years.

  • Methane – Natural gas is composed of many gases, methane being the principal component. The gas is lighter than air and so sensors are installed close to the ceiling in rooms that house industrial and commercial burners. Use model 6005 for detection of natural gas leaks in the range of 0-50 percent of the lowest explosive limit.
  • Propane – model 6006 for propane leak detection in commercial kitchens, laboratories and for propane stored indoors. Propane is heavier than air so detectors are installed from one to three feet from the ground.
  • Hydrogen – Hydrogen is generated when batteries are charged, such as lift truck batteries or stand-by power systems. In a small room, it can accumulate and create a risk of explosion. In addition, escaping gases trap acids which will corrode metals in the area. Use model 6008 to control exhaust ventilation or warn of an excess build up.

Refrigerant Gas Leak Detection

Sensors are installed in compressor rooms within close proximity to compressors, close to the floor. Use series 60XX sensors and Opera 6000 control unit that is installed outside of the mechanical room at eye level to signal a potential risk to someone entering the room. Controller features a built in audible alarm and strobe.

When using nitrogen in cryogenic applications the gas displaces air and oxygen (normally 21.5 percent) resulting in asphyxiation risk.

Industrial Health and Safety

Opera supplies gas detection systems for toxic and combustible industrial products, including solvents, ammonia, toluene, ethylene glycol, methyl-ethyl-keytone, paints, glues and alcohol.

Consult EP Sales Inc. for safety requirements for your application.

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  • Literature

“WARNING: the technical information provided on this website is for qualified HVAC technicians only.  High voltage equipment/appliances can cause serious injury or death if proper precautions aren’t used while servicing said products.”

6000 Controller Data Sheet
60xx Data Sheet
6021 Refrigerant Data Sheet
6100 Relay Module Data Sheet
IMC 2015 Changes Affecting Parking Garage Exhaust Systems Implementation


EP Sales maintains a large inventory of Thermolec and Greentek products and parts to service the needs of our customers.