CO, NO2 Gas Controllers, Gas Sensors, Gas Detectors

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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 Controllers /Gas monitoring – Indoor garage

For car garages use carbon monoxide detectors to control exhaust ventilation.  Where diesel powered automobiles are also present use a combined unit with both carbon monoxide sensor and nitrogen dioxide sensor built in. These catalytic bead type sensors feature a poison filter which reduces the risk of damage and prolongs life expectancy to up to 10 years.

Gas monitoring – warehousing

Reduce energy costs by measuring emissions from gasoline and propane powered for lift trucks and only exhaust heated and air conditioned air when needed. Control vehicle emissions in maintenance garages for trucks, buses, lift trucks, and heavy equipment.  Small motors such as lawn movers, chain saws, outboards, all terrain vehicles can have no catalytic converters, so toxic emissions can be greater than from automobiles.

  • Model 6002 for carbon monoxide from gasoline and propane powered vehicles
  • Model 6002-H2nil for carbon monoxide from gasoline and propane vehicles where batteries are also being charged
  • Model 6014 for nitrogen dioxide to control diesel emissions

 Gas detectors opera detector

6000 Series Gas Detector Data Sheet (pdf)  REQUEST A QUOTE

 Ammonia (NH3) – model 6004,  0-250 ppm factory calibrated electro-chemical type sensor expected life 1 to 3 years (varies with environments conditions)

Butane model 6005  – 0-2000 ppm, factory calibrated, infrared type sensor, auto zero, calibration, expected life over 15 years (in commercial applications) 0-50% LEL factory calibrated catalytic bead type sensor expected life 5-7 years

Carbon Dioxide (CO2) Gas Detector Model 6015-2000, 0-2000 ppm factory calibrated infrared type sensor auto zero calibration, expected life over 15 years (in commercial applications).
Carbon Dioxide 0-5000 ppm model 6015-5000 suitable for use as compressed gas leak detector in mechanical rooms dual beam infrared type sensor, auto calibration, recommended calibration interval 5 years, expected life 15 years.

Carbon monoxide (CO) Gas Detector model 6002, 0-100 ppm for commercial applications factory calibrated electro-chemical type sensor, expected sensor life 5-7 years.

Carbon Monoxide Gas Detector model 6002-250, 0-250 ppm factory calibrated electro-chemical type sensor expected life 5-7 years.

 Carbon Monoxide Nil Hydrogen model 6002-H2nil  0-100 ppm, electro-chemical type sensor, CO with reduced hydrogen response, It has a special electrochemical sensor that is immune to the effects of hydrogen.  With regular electro-chemical sensors, the hydrogen generated when charging batteries will cause excessive demand for fresh air and false alarms.  This sensor reduces heating costs significantly.

Use for;

  • Warehouses with both propane and electric lift trucks
  • Vehicle maintenance facilities where batteries are charged on a regular basis such as automobile dealerships.
Model 6002-14 – Dual Gas Detector – Carbon Monoxide (CO) & Nitrogen Dioxide
(NO2) CO 0-100 ppm, NO2 0-10 ppm electro-chemical type sensors.
Model 6017 Chlorine (CL2) Gas Detector 0-10 ppm factory calibrated electro-chemical sensor

expected life 1-3 years

Model 6025 Humidity [relative] Sensor 0-100% humidity

Model 6008 Hydrogen (H2) Gas Detector 0-50% LEL factory calibrated catylitic bead type sensor built-in poison filter expected life 7 years

Model 6016 Hydrogen Sulphide (H2S) Gas Detector 0-50 ppm electro-chemical type sensor

Model 6005 Gas Detector for Methane (CH4), Butane  (C4H10) Iso-Butane (C4Hl0)  0-50% LEL factory calibrated catylitic bead type sensor expected life 5-7 years built in poison filter

Model 6014 Nitrogene Dioxide (NO2) Gas Detector  0-10 ppm factory calibrated electro-chemical type sensor expected life 1-3 years (will vary with enviornmental conditions)

Model 6001 Organic Vapors (VOC) Gas Detector  Ethylene glycol (C4H4(OH2) Ethanol (C2H5OH2) Iso-propyl Alcohol (C3H7OH) Methanol (CH3OH) 0-1000 ppm sensor type semi-conductor

Model 6022 Oxygen (O2) Leak Detector for alarm on oxygen rising  2  0-50% O2  factory calibrated  fuel cell type sensor expected life 2 years

Model 6023 Oxygen (O2) Depletion Detector for alarm on oxygen depletion  0-50% O2 factory calibrated fuel cell type sensor expected life 2 years

Model 6013 Refrigerant Leak Detector HCFCs  factory calibrated semi-conductor type sensor expected life 3-5 years for detection of R22, R401A, R402A, R408A, R502

Model 6020 Refrigerant Gas detector for HFCs  factory calibrated semi-conductor type sensor expected life 3-5 years for detection of R134A, R404A, R10A, R507

Model 6006 Propane Gas Leak Detector (C3H8) 0-50% LEL catalytic type sensor for detection of exhaust emissions from propane vehicle see model 6002

Series 5000 Gas detector   Gas Detector Model 5000


  • CAN network (master/slave) interface
  • factory calibrated plug-and-play sensor modules (55xx)
  • CSA certified

5000 Series -operation-manual gas detector / controller (pdf) 


   Model comparison                                           series   5000   6000  6000-A
  heavy duty steel enclosure      S       –      –
  PC ABS enclosure with built in wire guide      –      S      S
  adjustable alarm relays      3      2      1
  bacnet MSTP interface  optioal      S      S
  LED indicators for alarm 1 and 2       –      S      S
  powerful led strobe flasher on alarm 3       –      S      S

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.  

Refrigerant Gas Leak Sensor – Selection Guide

Model Number Type of refrigerant Sensor Range
6022 (oxygen depletion) 728 nitrogen 0-50% O2
6004 electro-chemical 717 ammonia 0-250 ppm
6013 R22 0-1000 ppm
R141b 0-900 ppm
R142b 0-800 ppm
R401a (MP-39) 0-1200 ppm
R402a (HP-80) 0-1500 ppm
R408a 0-1500 ppm
R409a 0-1500 ppm
R502 0-800 ppm
6020 R134a 0-2000 ppm
R152a 0-600 ppm
R404a (HP-62) 0-500 ppm
R407c 0-1400 ppm
R410a 0-1400 ppm
R507 0-800 ppm