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Optical flame detector

An optical flame detector reacts to radiations emitted from any flame type.  A flame detector sensor is designed to quickly alert (a few tens of milliseconds) of any fire outbreak through digital (RS485 communication, Modbus or Hart), analog (4-20 mA), or relay signals.

infrared optical flame detector, flame detection sensors and UV flame detectors for industrial site fire prevention
  • infrared flame detector principle

    An optical flame detector is composed by ultraviolet (UV) and infrared (IR) sensors. The most efficient flame detectors usually feature several sensors (UV, UV/IR, IR3 or IR4).

    Most of our optical flame detectors are SIL2 approved. They provide a high performance level and their mean time between failures (MTBF) is higher than 17 years.

  • concerned areas of activity

    An optical flame detection system is well suited for highly hazardous industrial areas like refineries, gas pipelines & pumping stations, storage depots (solvents, alcohols, paints), offshore platforms, printing plants and also every ATEX classified areas (explosive atmosphere).

    These fire-outbreak monitoring units are particularly efficient for hydrocarbon - combustible gas - (fuel, gasoline, jet fuel), methane, LPG, hydrogen, polypropylene fire detection as well as paper fire in printing plants for example.

  • different types of optical flame detector sensor

    • . UV flame detector – made with a UV sensitive sensor. It generates an output signal based on the radiation and compares it to an accurately calculated reference.

      . IR flame detector – composed of an IR sensor sensitive to CO2 exhausted by fire.

      . UV IR flame detector – made up of an UV sensitive sensor combined to an IR sensor for the detection of hydrocarbons, hydrogen and metal flames with a high-speed response time (<150 msec). It requires a simultaneous response of both sensitive units.

      . IR3 flame detector – three pyro-electric sensors detect the IR radiations related to different emission peaks. The IR3 sensor for hydrocarbons flame monitoring is immune to sunray.

      . IR4 flame detector – a combination of 4 infrared sensors to detect hydrocarbons and hydrogen flames 5 to 65 meters away.

Our optical flame detector range:

Optical flame detector – FS24X IR3

Thanks to semiconductor quantum sensors, the FS24X can detect any type of fire – from hydrocarbons or other substances – never mind weather conditions.

  • Flame detector FS24X
  • Response time: 3 to 5 seconds for an n-heptane fire at 30m
  • Output relaus: fire, faut and auxiliary alarm: SPDT NO or NF
  • RD-485 Modbus, FireBus II or HART user-selectable communication
  • ATEX, IECEX II 2 GD certified
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Optical flame detector – FS20X

Fire and flame optical detector with electro-optical technology for petrochemical plants, refineries, airplane hangars, gas turbines…

  • Detecteur optique de flamme IR/UV
  • 3 to 5 seconds response time for a gasoline fire
  • Ultraviolet spectral sensitivity: 185 to 260 nanometers
  • 90° cone of vision (±45° from the axis)
  • Detection range above 60 meters
  • ATEX, IECEX II 2 GD approved
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SharpEye optical flame detector

ATEX and SIL 2 approved high performance flame detector (MTBF > 17 years). Different versions adapted to each fire type.

  • Flame detector SharpEye
  • Available in IR3, IR4 and UV-IR versions
  • High immunity to interference radiations
  • Several available outputs: mA, contact relay, RD485, Modbus, Hart
  • Self-check and optics clogging control
  • Compliance with EN54-10 standard – ATEX and SIl 2 approved
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