MSA FL500 UV/IR Vlam Detector

MSA FL500 UV/IR Flame Detector


The FL500 UVIR flame detector delivers fast flame detection with increased false alarm immunity in a compact design.



The FL500 UV / IR flame detector monitors for radiation emitted by a flame in both the ultraviolet (UV) and infrared (IR) spectral ranges. This combination of UV / IR provides a fast response time and increased false alarm immunity to radiation sources for reliable protection. 

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  • Proven technology. UV / IR flame detection uses an ultraviolet and an infrared detector to monitor pp flames, increasing false alarm immunity by measuring two different flame spectra.
  • FM performance approved. Six fuel sources (heptane, methane, methanol, propane, ethane, butane) tested with verified field of view.
  • Wide field of view. The 130° field of view covers a larger distance.
  • Self-Check for safety integrity. Continuous Optical Path Monitoring (COPM) performs a self-check every two minutes to ensure that the optical path is clear and that the electronic circuitry is functional.
  • Test anytime, anywhere. Test easily with our exclusive TL105 test lamp which allows the FL500 UV/IR flame detector to be safely tested in real fire conditions with simulated flame flicker.
  • Resistant to extremes. The wide operating temperature range (-55 °C to +85 °C) enables use in extreme environments.
  • Status at a glance. Three LED status indicators for warning, alarm and normal operation.
  • Robust housing. 316 stainless steel housing to withstand the toughest environments.
  • Multiple output options. Industry standard 4-20 mA (source or sink analog), Modbus, HART, relays

More Information

More Information
Wavelengths 185 tot 260 nm (UV), 4,35 micron (IR)
Field of view Up to 130° max. eye angle
Operating temperature -55°C to +85°C (-67°F to +185°F)
Storage temperature -40°C to +85°C (-40°F to +185°F)
Operating humidity 0% tot 95% non-condensing
Mounting Stainless steel mounting bracket
Cable entry 2 x 3/4” NPT of 2 x 25 mm
Weight 4 kg
Diameter 114 mm
Housing 316 Stainless steel powder coated