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Product Features
  • Triple Spectrum Design
  • Sensitivity Selection
  • Automatic and Manual Built-In-Test
Delivery options

At Cadmus Products we aim to deliver orders efficiently and at highly competitive rates. 

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Crowcon SharpEye 40/40I Triple IR (IR3) Flame Detector


Please Note: This product is now end of life. For an alternative, please see the Crowcon FGard IR3 Flame Detector.

The Crowcon 40/40I Triple IR (IR3) Flame Detector detects fuel and gas fires at long distances with the highest immunity to false alarms. The 40/40I IR3 can detect a 1ft2 (0.1m2) gasoline pan fire at 215 ft (65m) in less than 5 seconds. The 40/40I is the most durable and weather resistant flame detector currently on the market. Its 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 and is SIL2 (TUV) approved to IEC 61508.

Key Features:

  • Triple Spectrum Design - for long distance detection and high false alarm immunity
  • Sensitivity Selection - to ensure no zone crossover detection
  • Automatic and Manual 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 (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
  • 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
    - IECEx
    - FM/FMC
    - CSA
  • 3rd party Performance Tested
    - EN54-10 (LPCB)
    - FM3260 (FM)
    - DNV Marine Approval


  • Offshore Oil & Gas installations
  • Onshore Oil & Gas installations and pipelines
  • Chemical plants
  • Petrochemicals plants
  • Storage Tank farms
  • Aircraft hangars
  • Power Generation facilities
  • Pharmaceutical Industry
  • Printing Industry
  • Warehouses
  • Automotive Industry
  • Explosives & Munitions
  • Waste Disposal facilities

Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

Product Specification

Spectral Response Three IR Bands
Detection Range (at highest Sensitivity Setting for 1ft2 (0.1m2) pan fire) - n-Heptane: 215ft / 65m
- Gasoline: 215ft / 65m
- Diesel Fuel: 150ft / 45m
- JP5: 150ft / 45m
- Kerosene: 150ft / 45m
- Ethanol 95%: 135ft / 40m
- Methanol: 115ft / 35m
- IPA (Isopropyl Alcohol): 135ft / 40m
- Methane*: 100ft / 30m
- LPG *: 100ft / 30m
- Polypropylene Pellets: 16ft / 5m
- Office Paper: 33ft / 10m
* 20" (0.5m) high, 8" (0.2m) width plume fire
Response Time Typically 5 seconds
Adjustable Time Delay Up to 30 seconds
Sensitivity Ranges 4 Sensitive ranges for 1 ft2 (0.1m2) n-heptane pan fire from 50 ft (15m) to 215 ft (65m)
Field of View Horizontal 100º; Vertical 95º
Built-in-Test (BIT) Automatic (and Manual)
Temperature Range - Operating: -67ºF to +167ºF (-55ºC to +75ºC)
- Option: -67ºF to +185ºF (-55ºC to +85ºC)
- Storage: -67ºF to +185ºF (-55ºC to +85ºC)
Humidity Up to 95% non-condensing (withstands up to 100% RH for short periods)
Heated Optics To eliminate condensation and icing on the window
Electrical Specifications
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 (2.5mm2 - 0.3mm2)
Electrical Input Protection According to MIL-STD-1275B
Electromagnetic Compatibility EMI/RFI protected to EN61326-3 and EN61000-6-3
Electrical Interface The detector includes twelve (12) terminals with five (5) wiring options (factory set)
Relays - Alarm, Fault and Auxiliary
- SPST volt-free contacts rated 5A at 30 VDC or 250 VAC.
0-20mA (stepped) Sink (source option) configuration
- Fault: 0 +1mA
- BIT Fault: 2mA ± 10%
- Normal: 4mA ± 10%
- 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 installations
Mechanical Specifications
Enclosure options
- Stainless Steel 316L with electro polish finish
- Heavy duty copper free aluminum (less than 1%), red epoxy enamel finish
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)
- Tilt mount 2.2 lb (1.0 kg)
- Detector, aluminum 2.8 lb (1.3 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 T5 (-55ºC to +75ºC), Ex de IIC T4 (-55ºC to +85ºC), Ex tD A21 IP66/X7 T 95ºC, Ex tD A21 IP66/X7 T 105ºC
- FM/FMC/CSA: Class I Div. 1, Groups B, C & D, Class II/III Div. 1, Groups E, F & G
Performance - EN54-10 (LPCB)
- FM-3260 (FM)
- DNV Marine Approval
Reliability IEC61508 - SIL2 (TUV)
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