Applications Main Features
Triple IR (IR3) Flame Detector
The SharpEye Triple IR (IR3)
Optical Flame Detector
(20/20I) is a self-contained,
triple-spectrum flame detector. The optical sensors
and filters have 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 patented Triple IR (IR3) circuit design scans for
oscillating IR radiation (1 to 10 Hz) in the spectral
bands ranging from 4.0 to 5.0 microns. This highly
advanced detector uses programmable algorithms
which check the ratio and correlation of data received by the three sensors.
The microprocessor design allows for unique field
programmability not found in similar detectors,
making the 20/20I highly immune to false alarms.
The detector has applications in a wide range of
industrial and commercial facilities, where the threat
of accidental fire involves hydrocarbon fuels, such
as gasoline, kerosene, diesel fuel, aviation jet fuels
like JP-4, JP-5, JP-8, hydraulic fluids, paints and
solvents, hydrocarbon gases like ethylene and polyethylene, natural gas (LNG), town gas, liquefied
petroleum gas (LPG), methane, ethane, propane, etc.
The patented Triple IR design offers two
to three times the detection distance of
any conventional IR or UV/IR detector.
Main Features
• Triple Spectrum Design
• Sensitivity Selection
• User Programmable Configuration
• Highly Immune to False Alarms
• Automatic and Manual Built-In Test (BIT)
• Standard 4-wire Connection
• 4-20mA sink or source (3-4 wires) configuration
• RS-485 Interface
• MTBF Minimum 100,000 Hours
• 3-Year Warranty
• FM, CSA, ATEX, Gost R and Gost K Approved
• Aircraft Hangars - landing gear pits, under-wing
and over-wing protection
• Automotive - manufacturing, paint spray booths
• Chemical Industry - production, storage, transportation
• Pharmaceutical Industry
• Power Generation Facilities - pump areas,
generator rooms, unmanned stations, gas-fired
and coal-fired reactors
• Explosives & Munitions - handling and storage
• Printing Industry - solvent handling, presses,
drying processes
• Oil & Gas - exploration, production, storage and
• Tank Farms - floating-roof and fixed-roof tank
• Offshore Platforms - fixed rigs and floating
vessels FPSO
• Warehouses - storage facilities for flammable
• Onshore - refineries, loading terminals, pipelines
• Waste Disposal Facilities - incineration, processing and storage of flammable waste materials
(solids, liquids, gases)
• Paint - manufacturing facilities
• Petrochemicals - production, storage, shipping
218 Little Falls Road | Cedar Grove | NJ 07009 | USA
Tel: +1 (973) 239-8398 | 1 (800) 452-2107 (Toll free US only) | Fax: +1 (973) 239-7614
E-mail: | Web-site:
General Specifications
Spectral Response
Detection Range
(Highest Sensitivity Setting
for 1 ft2 (0.1m2) pan fire)
Three IR Bands
Diesel Fuel
Alcohol (Ethanol)
Response Time
Adjustable Time Delay
Sensitive Range
Typical 5 sec.
Up to 30 sec. (up to 20 sec. in compliance with FM requirements)
4 Sensitive Ranges for 1 ft2 (0.1m2) gasoline pan fire:
from 50 ft (15m) to 200 ft (60m)
90˚ horizontal, 90˚ vertical
Manual and Automatic BIT
-40°F (-40°C) to 160°F (70°C)
Operating Option: -40°F (-40°C) to 185°F (85°C)
-65°F (-55°C) to 185°F (85°C)
Up to 95%
200 ft (60m)
200 ft (60m)
140 ft (42m)
150 ft (45m)
150 ft (45m)
150 ft (45m)
IPA (Isopropyl Alcohol)
LPG (Propane)*
Polypropylene Pellets**
Office Paper
150 ft (45m)
100 ft (30m)
60 ft (20m)
60 ft (20m)
16 ft (5m)
60 ft (20m)
*20" (0.5m) plume fire, **8" (0.2m) diameter
Field of View
Temperature Range
Electrical Specifications
Power Supply
Power consumption
Electrical Connection
Electrical Input Protection
Electromagnetic Compatibility
Operating Voltage: 18-32 VDC
Max. 150 mA in stand-by
Max. 200 mA in alarm
2 x 3/4" - 14NPT conduits
or 2 x M25 x 1.5 mm ISO
According to MIL-STD-1275A
EMI/RFI protected CE Marked
- 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
Sink (source option) configuration
0 +0.5mA
5mA ±10%
10mA ±10%
15mA ±10%
Resistance Loop: 100-600 Ω
The detector is equipped with an RS-485 proprietary communication protocol link that can be used in installations with computerized controllers.
Mechanical Specifications
Environmental Standards
Water and Dust
4.7" x 5.2" x 5.2" (100 x 132 x 132 mm)
Aluminum: 8.1Lb (3.7 Kg)
St.St 316L: 14.3Lb (6.5 Kg)
Aluminum, heavy-duty copper free (less than 1%), white epoxy enamel finish.
Optional - Stainless Steel 316L with electro polish finish.
Meets MIL-STD-810C for Humidity, Salt & Fog, Vibration, Mechanical
Shock, High Temp, Low Temp
IP66 and IP67 per En60529
NEMA 250 6P
Hazardous Area approvals
EX II 2G, EExd IIB + H2 T5 (70°C) ,T4 (85°C)
EX II 2G, EExde IIB + H2 T5 (70°C)
Class I Div. 1, Groups B, C & D
Class II Div. 1, Groups E, F & G
Fire Simulator
Swivel Mount
20/20-003 (St. St. 316L)
Specifications subject to changes
For more information view manual or website
DS-F-IR3, May 2005
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