Gas and Flame Detectors

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Gas detectors include a range of gas detection systems including oxygen detectors, toxic gas detectors, combustible gas detectors, and more. They can be mounted locally or as remote transmitters and are used for detecting oxygen depletion and the presence of toxic or combustible gases.

Flame detectors are used to detect the presence of flame or fire caused by combustible gases and vapors. They utilize infrared and ultraviolet technology to read changes in the atmosphere caused by combustion and are commonly used in petrochemical plants and other hazardous environments.

Gas Detectors for a Broad Range of Monitoring Applications

Gas Detectors from RC Systems are designed for a wide range of monitoring applications. Our "Smart Sensor" interface has been adapted to many sensor technologies including electrochemical, resistive bridge, PID's (Photo Ionization Detectors), IR's (Infrared), milliamps, and voltage inputs. The SenSmart 1100, 4000 and 5000 are single variable devices, and the SenSmart 6000 and 3000 may be supplied as single or dual variables with sensors mounted local or remote to the transmitter housing.


  • Single-point monitoring and local alarm indication
  • Bright and colorful backlit LED display
  • Increased signal stability
  • Heated elements available for low temperatures
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  • Robust design with smart sensor technology
  • Supports a full range of oxygen and toxic gas sensors
  • Easy to calibrate
  • Features non-volatile memory to store data
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  • Available for the SenSmart 1000, 2000, 3000, 4000, 5000, 6000, and 7000 series gas detectors
  • Models available for detecting oxygen, hydrogen sulfide, ammonia, and many other toxic gases
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  • Open path and single point combustible gas detectors available
  • Designed to detect acetylene, butane, hexane, methane, propane, and more gases
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  • Available for SenSmart 3000, 5000, and 6000 series gas detectors
  • Uses advanced gas detection technology for reliable results
  • Suitable in a wide variety of CO2 applications
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  • Available for SenSmart 3000, 5000, and 6000 series gas detectors
  • Ideal for oil spills, leaking cylinders or valves, and other leak situations
  • Measures VOCs such as benzene, and other gases
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  • Easy to use and low power
  • Models available for Class 1, Division 1 or Class 1, Division 2 locations
  • Versatile detectors for toxic gas, carbon dioxide, or combustible gas
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  • Models available for Class 1, Division 1 or Class 1, Division 2 locations
  • Use with SenSmart 3000, 5000, 6000, or 7000 series gas detectors
  • Versatile detectors
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  • Enhanced reliability and durability
  • 5-year warranty
  • Fitted with a heated window
  • HART output for quality information during installation or maintenance
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Flame Detectors for Reliable Flame and Fire Monitoring

Flame detectors from RC Systems detect flame and fire caused by fuel or gases and can detect a 1ft² (0.1m²) gasoline pan fire at 215 ft (65m) in less than 5 seconds. They feature a multi-spectrum design for long-distance detection and false alarm immunity and have an automatic and manual built-in-test for continued reliable operation. Options include IR3, combined UV/IR, single UV types, single IR types, and multi-IR detectors for detecting both hydrocarbon and hydrogen flames.

Our flame detector sensors feature a heated window to remain operational in harsh weather conditions and have an operating temperature range of -67°F to +167°F (-55°F to +75°F). All of RC Systems’ flame detectors are Ex approved to ATEX & IECEx and FM/FMC/CSA.

Flame detectors are more effective and reliable than heat and smoke detectors and are used by various industries, including:

  • Oil and gas
  • Petrochemical
  • Waste disposal
  • Chemical
  • Pharmaceutical
  • Printing
  • Automotive
  • And more

How Does a Flame Detector Work?

Flame detectors use optical methods to detect the presence of open fire or flames caused by hydrocarbon and other combustible gases. There are several methods of detection, including ultraviolet, infrared, multi-infrared, and UV/IR combinations.

Ultraviolet sensors work by measuring levels of radiation in the atmosphere, and infrared sensors utilize infrared patterns emitted by hot gasses. Other sensors combine both types of technology for increased accuracy or use with multiple gases. Flame detectors can be configured to provide several responses including sounding an alarm, activating a fire suppression system or triggering a gas or fuel line to disconnect.

View the individual product descriptions below to learn more about our gas detectors and flame detectors or contact us to discuss your gas monitoring and detecting requirements.

Request a Quote for Your Flame Detector Sensor Today

Use our parts configurators to customize your gas detector or contact us to discuss your unique requirements.