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


SPECTREX 40/40UFL-111AF (1)

SPECTREX SharpEye 40/40UFL UV-IR High-Speed Optical Flame Detector for hydrocarbon-based fuel and gas fires. High-Speed Response (20 msec) to flash fire and High Reliability and immunity to false alarm, design based on military specifications. 2 Relays (Alarm and Fault), 0-20mA stepped and analogue output for fast detection. Compatible with RS-485 Modbus. Automatic and Manual Built-In-Test (BIT) feature included. Ex approved for Zone 1, ATEX, IECEx, FM and CSA Class I Div 1. EN54-10 (VdS Germany) approved. 5 year warranty and is SIL2 (TUV) approved to IEC 61508 *** Phased Out replaced by 40/40D-LB ***


The new SharpEye UV-IR High-Speed Optical Flame detector 40/40UFL is designed to meet two major requirements:

  • High-Speed Response (20 msec)
  • High Reliability (immunity to false alarm)

This detector is based on our well known military detector used in Armored Vehicle Explosion Suppression System combined with the industrial UV-IR detectors 20/20LB and 40/40LB.

The UV/IR flame detector senses radiant energy in the short wave section of both the ultraviolet and infrared portions of the electromagnetic spectrum. The signals from both sensors are analyzed for frequency, intensity and duration. Simultaneous detection of radiant energy inn both the UV and IR sensors triggers an alarm signal.

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

  • UV/IR Dual-Sensor
  • High-Speed Response - 20 msec to flash fire
  • Solar blind
  • Automatic Built-In-Test (BIT) - to assure continued reliable operation
  • Heated window - for operation in harsh weather conditions (snow, ice, condensation)
  • Multiple output options for maximum flexibility and compatibility
    • Relays (2) for Alarm and Fault
    • Analogue output for fast detection
    • 0-20mA (stepped)
    • HART Protocol for maintenance and asset management
    • RS-485, Modbus Compatible
  • High Reliability - MTBF - minimum 150,000 hours
  • Approved to Safety Integrity Level 2 (SIL2 TUV)
  • 5-Year Warranty
  • User Programmable via HART or RS-485
  • Ex approved for Zone 1 hazardous area location
    • ATEX Approved
    • IECEx Approved
    • FM/FMC Pending
  • 3rd party Performance Tested
    • EN54-10 (VdS Pending)
    • FM3260
  • Explosives & munitions
  • Offshore Oil & Gas
  • Onshore Oil & Gas
  • Petrochemical plants
  • Storage tank farms
  • Aircraft hangars
  • Chemical plants
  • Power generation facilities
  • Pharmaceutical industry
  • Printing industry
  • Warehouses
  • Automotive industry
  • Waste disposal facilities
  • Aerospace industry

Spectral ResponseUV: 0.185 - 0.260 μm;
IR: 2.5-3.0 μm
Detection Range
(at highest Sensitivity Setting for 1ft2 (0.1m2) pan fire)
Fuel ft / m
n-Heptane 65 / 20
Gasoline 65 / 20
Diesel Fuel 50 / 13.5
JP5 42 / 14
Kerosene 42 / 14
Ethanol 95% 23 / 7
Methanol 26 / 8
IPA (Isopropyl Alcohol 43 / 13
Hydrogen** 23 / 7
Methane* 16 / 5
LPG * 16 / 5
Polypropylene Pellets 16 / 5
Ammonia * 16 / 5
Silane * 20 / 6
Office Paper 16 / 5
* 20" (0.5m) high, 8" (0.2m) width plume fire
Response Time Typically 3 seconds. High speed 20 msec to flash fire
Adjustable Time Delay Up to 30 seconds
Sensitivity Ranges 1 ft2 (0.1m2) n-heptane pan fire from 65 ft (20m)
Field of View Horizontal 100; Vertical 90
Built-in-Test (BIT) Automatic (and Manual)
Temperature Range Operating: -67F to +167F (-55C to +75C)
Option: -67F to +185F (-55C to +85C)
Storage: -67F to +185F (-55C to +85C)
HumidityUp to 95% non-condensing (withstands up to 100% RH for short periods)
Heated Optics To eliminate condensation and icing on the window
Operating Voltage 24 VDC nominal (18-32 VDC)
Power Consumption Standby: Max. 90mA (110mA with heated window)
Alarm: Max. 130mA (160mA with heated window)
Cable Entries 2 x 3/4" - 14NPT conduits or 2 x M25 x 1.5 mm ISO
Wiring 12 - 22AWG (2.5mm 2 - 0.3mm 2)
Electrical Input Protection According to MIL-STD-1275B
Electromagnetic CompatibilityEMI/RFI protected to EN61326-3 and EN61000-6-3
Electrical Interface The detector includes twelve (12) terminals with five (5) wiring options (factory set)
RelaysAlarm, Fault and Auxiliary
SPST volt-free contacts rated 2A at 30 VDC
Analogue Output4-4.7V at detection
0-20mA (stepped) Sink (source option) configuration
Fault: 0 +1mA
BIT Fault: 2mA 10%
Normal: 4mA 10%
IR: 8mA 5%
UV: 12mA 5%
Warning: 16mA 5%
Alarm: 20mA 5%
Resistance Loop: 100-600 Ω
HART Protocol Optional HART communications on the 0-20mA analog current (FSK) - used for maintenance, configuration changes and asset management, available in mA source output wiring options
RS-485 RS-485 Modbus compatible communication link that can be used in computer controlled
Enclosure options
- Stainless Steel 316L with electro polish finish
- Heavy duty copper free aluminum (less than 1%), red epoxy enamel finish (not available in FM version)
Mounting Stainless Steel 316L with electro polish finish
Dimensions Detector 4" x 4.6" x 6.18" (101.6 x 117 x 157 mm)
Weight Detector (St.St.) 6.1 lb (2.8 kg)
Detector, aluminum 2.8 lb (1.3 kg)
Tilt mount 2.2 lb (1.0 kg)
Environmental Standards Meets MIL-STD-810C for Humidity, Salt & Fog, Vibration, Mechanical Shock, High Temp, Low Temp
Water and Dust IP66 and IP67 per EN60529, NEMA 250 6P
Hazardous Area
ATEX and IECEx Ex II 2 GD,  
  Ex de IIC (Ta -55C to + 75oC) Ex de IIC (Ta -55C to + 85oC)
  Ex tD A21 IP66/X7 T 95C Ex tD A21 IP66/X7 T 105C
FM/FMC Class I Div. 1, Groups B, C & D  
  Class II/III Div. 1, Groups E, F & G  
PerformanceEN54-10 (VdS Pending)
ReliabilityIEC61508 - SIL2 (TUV)
Export Info
Made inUnited States
Harmonized Tariff Code (HTC)90318099


SPECTREX  789260-2

Pole mount (U-bolt) - 2" for SPECTREX SharpEye flame detectors (does not include required 40/40-001 tilt mount)


SPECTREX  794079-5

USB RS485 Harness Kit with RS485/232 converter, used with Spectrex Host software, enables the user to connect to any available PC or laptop to re-configure settings or perform diagnostics on all 40/40 and 20/20 series flame detectors. Includes Host Software.




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)


SPECTREX  888810

Emerson HART Hand-Held Diagnostics Unit c/w converter and cable harness (1m), software and manual in case. For SPECTREX SharpEye flame detectors and Quasar 900 gas detectors, certified I.S. (EExia)


SPECTREX  40/40D-L4B-6-31-AC-N-7

SPECTREX SharpEye 40/40D-L4B Ultra Fast Ultraviolet Infrared Flame Detector UV/IR (4.5um with BIT). 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.



SPECTREX  40/40D-LB-6-31-AC-N-7

SPECTREX SharpEye 40/40D-LB Ultra Fast Ultraviolet Infrared Flame Detector. UV/IR 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.