Spectrex SharpEye 40/40U & 40/40UB UV Flame Detector

Code: 40/40U & 40/40UB
  • Low-cost solution
  • Fast response time typically 3 seconds
  • Field of View Horizontal 100º; Vertical 95º

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Spectrex SharpEye 40/40U and 40/40UB (with Built-in-test option) UV Flame Detector

Detects hydrocarbon-based fuel and gas fires, invisible hydrogen flames, and fires from hydrides, ammonia, silane and other organics. It is the most durable and weather-resistant UV flame detector currently on the market. New features include a heated window to eliminate condensation and icing; HART capabilities, for digital communications; lower power requirements; and a compact, lighter design.

Due to increased reliability, the 40/40 Series warranty period has been extended to 5 years.

Note: This type of detector should not be exposed to UV radiation sources such as welding, sparks, and electric arcs as it will cause false alarms.


  • UV spectrum design
  • Automatic and Manual Built-In-Test (BIT) – to assure continued reliable operation (in 40/40UB only)
  • Aluminium or Stainless Steel housing
  • Heated window – for operation in harsh weather conditions (snow, ice, condensation)
  • Multiple output options for maximum flexibility and compatibility
    • Relays (3) for Alarm, Fault and Auxiliary
    • 0-20mA (stepped)
    • HART Protocol for maintenance and asset management
    • RS-485, Modbus Compatible
  • High Reliability – MTBF – minimum 150,000 hours
  • User Programmable via HART or RS-485
  • Hazardous area zones:
    • Zones 1 & 2 with IIC gas group vapours present
    • Zones 21 & 22 with IIIC dust type present
  • Ex approved to:
    • ATEX & IECEx
    • FM/FMC/CSA
    • TR CU (EAC)
  • 3rd party performance approved
    • EN54-10 (VdS)
    • FM3260
  • Reliability
    • IEC61508 – SIL2 (TUV) – model 40/40UB only​​​​​​​​​​​​​​


40/40U UV – aluminium
40/40UB UV (with BIT) – aluminium


40/40-001 Tilt, 777090, Stainless steel
777670 40/40 Duct Mount, Stainless steel
777163 40/40 Weather Cover, Stainless steel
777166 40/40 Cone Viewer ( laser aimers (2x) not included)
777263 40/40 Weather Cover, ABS Plastic
777563 40/40 FOV field of view limiter, stainless steel
777650 40/40 Air Shield, Stainless steel
789260-1 Pole Mount(U-BOLT) – 3″, Stainless steel
789260-2 Pole Mount(U-BOLT) – 2″, Stainless steel
789260-3 Pole Mount (U-BOLT) – 4″, Stainless steel
794079 USB/RS485 Converter Kit
888810 HART Hand Held Diagnostics Unit (ATEX IS)


  • Chemical plants
  • Petrochemicals plants
  • Power Generation facilities
  • Pharmaceutical Industry
  • Printing Industry
  • Warehouses
  • Automotive
  • Aerospace
  • Explosives & Munitions
  • Waste Disposal facilities
  • Paint, Polymer and Glue processes

Low cost and fast response flame detector, but best suited for indoor use where UV energy sources are not present.

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Title Size
40-40 U-UB Datasheet 209 KB

Additional information

Weight 0.09 kg