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Gas Leak and Flame Detectors, Analyzers, Alarm Devices and Calibration Gas



SPECTREX Sharp Eye 20/20LB Flame Detector with UV (0.185 - 0.260 microns) and IR (2.5-3 microns) sensor for hydrocarbon-based, hydroxyl, hydrogen, metal and inorganic fires. 3 Relays (Alarm, Fault and Accessory), 4-20mA, 3/4" conduit entries. IP66 and IP67. NEMA 250 6P. FM Approved, aluminum enclosure, 3/4" conduit entries, Built-In-Test (BIT) included. *** Phased Out replaced by 40/40LB ***


The SharpEye UV/IR Optical Flame Detectors 20/20L and 20/20LB (which includes a BIT function) are an improved version of the well-proven Spectrex Ultra Violet/Infra Red (UV/IR) optical flame detectors featuring modern microprocessors and detection algorithms that provide excellent detection sensitivity combined with enhanced immunity to false alarms.

These enhanced models were developed in light of our highly successful experience in high-speed flame detection technology for both military and commercial industrial applications.

Both models are designed to detect hydrocarbon- based fuel fires, hydroxy and hydrogen fires as well as metal and inorganic fires.

The UV/IR flame detector senses energy in the short wave section of both the ultraviolet and infrared portions of the electromagnetic spectrum.

The sensor band pass has been carefully selected to ensure the greatest degree of spectral matching to the radiant energy emissions of fire, and the lowest degree of matching to non-fire stimuli.

The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation

The IR sensor is sensitive to radiation over the range of 2.5 to 3.0 microns. The signals from both sensors are analyzed for frequency, intensity and duration. Simultaneous matching of radiant energy in both the UV and IR sensors triggers an alarm signal.

  • UV/IR Dual-Sensor
  • High-Speed Response
  • 20 msec Response to Saturated Signal
  • User Programmable Configuration
  • Immune to False Alarms (solar blind)
  • Automatic and Manual Built-In-Test (BIT) - LB
  • Standard 4-wire Connection
  • 4-20mA source (3-4 wires) configuration
  • MTBF Minimum 100,000 Hours
  • 3-Year Warranty
  • FM Approved
  • 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
  • Explosives & Munitions - handling and storage
  • Paint - manufacturing facilities
  • Petrochemicals - production, storage, shipping facilities
  • Pharmaceutical Industry
  • Polymers and Glue - manufacturing and curing
  • Power Generation Facilities - pump areas, generator rooms, unmanned stations, gas-fired and coal-fired reactors
  • Printing Industry - solvent handling, presses, drying processes
  • Warehouses - storage facilities for flammable materials

Spectral ResponseUV: 0.185 - 0.260 m
IR: 2.5 - 3 microns.
Detection Range
(at highest Sensitivity Setting for 1ft2 (0.1m2) pan fire)
Fuel ft / m
Gasoline 50 / 15
n-Heptane 50 / 15
Diesel Fuel 37 / 11
JP5 37 / 11
Kerosene 37 / 11
Alcohol (Ethanol) 25 / 7.5
IPA (Isopropyl Alcohol 25 / 7.5
Methanol 25 / 7.5
Methane* 16.5 / 5
LPG* 16.5 / 5
Hydrogen* 16.5 / 5
Silane*** 16.5 / 5
Polypropylene Pellets** 16.5 / 5
Office Paper 12 / 4
*20" (0.5m) plume fire, **8" (0.2m) Diameter, ***12" (0.3m) plume fire
Response Time Typically 5 sec.
Adjustable Time Delay Up to 30 seconds. (up to 20 sec. in compliance with FM requirements)
Field of View90° horizontal, 90° vertical
Built-in-Test (BIT)Manual and Automatic BIT (in model 20/20LB only)>
Temperature Range Operating: -40°F (-40°C) to 160°F (70°C)
Operation Option: -40°F (-40°C) to 185°F (85°C)
Storage: -65°F (-55°C) to 185°F (85°C)
HumidityUp to 95%
Power SupplyOperating Voltage: 18-32 VDC
Power ConsumptionMax. 100mA (150mA with heated window)
Max. 150mA (200mA with heated window)
Electrical Connection2 x 3/4" - 14NPT conduits or 2 x M25 x 1.5 mm ISO
Electrical Input ProtectionAccording to MIL-STD-1275A
Electromagnetic CompatibilityEMI/RFI protected CE Marked
RelaysAlarm - 2A at 30 VDC, 0.5A at 250 VAC
Fault and Accessory - 5A at 30 VDC and 250 VAC
Fault relay normally closed, others normally open
4-20mASource configuration
Fault: 0 +0.5mA
BIT Fault: 2mA ± 10%
Normal: 4mA ± 5%
IR Detection: 8mA ± 5%
UV Detection: 12mA ± 5%
Warning: 16mA ± 5%
Alarm: 20mA ± 5%
Resistance Loop: 100-600 Ω
Dimensions4.7" x 5.2" x 5.2" (120 x 132 x 132 mm)
WeightAluminum: 8.1Lb (3.7 Kg)
St.St 316L: 14.3Lb (6.5 Kg)
EnclosureAluminum, heavy-duty copper free (less than 1%), white epoxy enamel finish.
Optional - Stainless Steel 316L with electro polish finish.
Environmental StandardsMeets MIL-STD-810C for Humidity, Salt & Fog, Vibration, Mechanical Shock, High Temp, Low Temp
Water and DustIP66 and IP67 per En60529
NEMA 250 6P
Hazardous Area approvals
ATEXEX II 2G, EExd IIB + H 2 T5 (70°C), T4 (85°C)
EX II 2G, EExde IIB + H 2 T5 (70°C)
FM / CSAClass I Div. 1, Groups B, C & D
Class II Div. 1, Groups E, F & G
Fire Simulator20/20-311
Swivel Mount20/20-003 (St. St. 316L)
Export Info
Made inIsrael
Harmonized Tariff Code (HTC)90318099



SPECTREX FS-1200 Long range flame simulator test lamp for all Spectrex UV and UV/IR Flame Detectors. Approved for Zone 1 and Zone 2 hazardous areas. Up to 26ft testing distance. Includes rechargeable Lithium-ion battery, charger, built-in beam collimator, tool kit and user guide in carrying case. IP65. ATEX and IECEx approved. (Replaces 20/20-311)

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ESP SAFETY  100-0003-01

ESP Safety IPES-IR/UV Infrared/Ultraviolet Flame Detector for detection of oil and petrochemical product fires. Rapid flame recognition and alar signaling. 4.2 to 4.6 microns (infrared) and 180 to 250 nanometers (ultraviolet) ranges. 90 degree field of view. RS-485, Modbus RTU, 4-20mA and relay outputs. Color status LED. Explosion-proof Housing. Designed for Class I, Division 1, Group B, C & D. ATEX certified, SIL3 Rated. Includes protective visor, stainless steel mounting bracket and hardware.




Honeywell FSL100-UVIR Flame Detector for robust, fast, and reliable detection of hydrocarbon and non-hydrocarbon fires in indoor/outdoor environments and potentially explosive atmospheres. Relay and mA outputs. GRP housing. EN54-10 and FM3260 approvals. IP65.




SPECTREX Sharp Eye 20/20ML Mini UV/IR Flame Detector for detection of gasoline, n-heptane, diesel, jp5, kerosene, alcohol, ,IPA, methanol, methane, propane, hydrogen, silane, polypropilene and paper fires. Low cost, stainless steel enclosure, compact and lightweight. Highly resistant to harsh environments, immune to false alarms and designed for OUTDOOR or INDOOR applications. 2 Relays (Alarm and Fault), 0-20mA (sink or source) and compatible with RS-485 Modbus. Stainless steel housing. Available Approvals: FM (Functionality, No Ex)



HONEYWELL  FS20X-211-212

Honeywell Fire Sentry FS20X Multi-Spectrum (UV/Dual IR/VIS) Fire and Flame Detector for hydrocarbon and non-hydrocarbonfuel fires in all industrial enviromental conditions. 90° field of view. RS-485 MODBUS communication and 0-20 mA stepped analog output. Includes fire, fault and auxiliary relays. NEMA 4 & 4X enclosure. IP66. FM, ATEX and CE approvals.



SPECTREX  40/40C-L4B-M-6-41-AC-N-7

SPECTREX SharpEye 40/40C-L4B Ultraviolet/Infrared UV/IR 4.5um Flame Detector. Detects hydrocarbon-based fuel and gas fires with proven immunity to false alarms. 24 Vdc. Includes HART capability, Automatic Built-In-Test (BIT), 3 Relays for alarm, fault and auxiliary and RS-485 Modbus outputs. Heavy duty copper free aluminum housing. IP66 and IP68. NEMA® 250 6P. ATEX, IECEx, FM, CSA and SIL3 Approved. Capable for Class I Div 1 & 2.



SPECTREX  40/40C-LB-M-6-41-AC-N-7

SPECTREX SharpEye 40/40C-LB Ultraviolet/Infrared Flame UV/IR Detector. Detects flames with a large variety of hazardous sources (hydrocarbon, hydroxyl, hydrogen, metal, inorganic). 24 Vdc. Includes HART capability, Automatic Built-In-Test (BIT), 3 Relays for alarm, fault and auxiliary and RS-485 Modbus outputs. Heavy duty copper free aluminum housing. IP66 and IP68. NEMA® 250 6P. ATEX, IECEx, FM, CSA and SIL3 Approved. Capable for Class I Div 1 & 2.