Spectrex SharpEye 20/20ML Mini UV/IR Flame Detector

Code: 20/20ML-1
  • UV-IR
  • Response time typically 5 seconds
  • Large field of view Horizontal 100º; Vertical 100º

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The low cost, compact, lightweight 20/20ML-1 UV/IR Flame Detector comprises both UV and IR sensors, detecting hydrocarbon-based fuel and gas fires, hydroxyl and hydrogen fires, as well as metal and inorganic fires up to a range of 15 metres. The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation. Simultaneous detection of radiant energy in both the UV and IR sensors triggers an alarm signal.

A compact style detector featuring excellent detection sensitivity. The UV/IR flame detector senses energy in the short wave section of both the ultraviolet and infrared portions of the electromagnetic spectrum. The IR sensor is sensitive to radiation over the range of 2.5 to 3.0 microns. The signals from both sensors are analysed for frequency, intensity and duration.


  • UV/IR Dual-Sensor
  • High-Speed Response
  • 50 msec Response to Saturated Signal
  • User Programmable Functions Configurable via software from a PC or handheld device
  • Immune to False Alarms (solar-blind)
  • Automatic and Manual Built-In-Test (BIT)
  • Standard 4-wire Connection
  • 4-20mA source (3-4 wires) configuration
  • RS-485 Modbus Compatible
  • MTBF Minimum 100,000 Hours
  • 3-Year Warranty

Applications: Aerospace Industry – Hydroxy fuels, Hydrogen and Hydrazine fuels, Aircraft Hangars – landing gear pits, under-wing and over-wing protection,  Automotive – manufacturing, paint spray booths, Chemical Industry – production, storage, transportation, Paint – manufacturing facilities, Petrochemicals – production, storage, shipping facilities, Pharmaceutical Industry, Polymers and Glue – manufacturing and curing,  Power Generation Facilities – pump areas, generator rooms, crewless stations, gas-fired and coal-fired reactors, Printing Industry – solvent handling, presses, drying processes, Warehouses – storage facilities for flammable materials.

Ordering Information

20/20-ML-1-1-S-F UV/IR (Standard Range 15 m) – FM / Cable Output / Stainless steel
20/20-ML-1-2-S-F UV/IR (Standard Range 15 m) – FM / Plug Output / Stainless steel


20/20-005 Tilt Mount, Spare Kit 787639, stainless steel
787960 Air Shield, Spare Kit
787980 Rain Shield, Spare Kit, aluminium
794079 USB/RS485 Converter Kit

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Title Size
20-20ml-mini-uv-ir-flame-detector-datasheet 91 KB

Additional information

Weight 0.09 kg