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Product Features
  • Fast detection under five seconds
  • Proven false alarm immunity
  • Unparalled reliability - 150,000 hours MTBF
  • SIL3 compatible
  • Innovative UV and IR Built-In-Test - continuously validating the optical integrity and the electronic circuitry
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Spectrex SharpEye 40/40C-L4B Integrated UV/IR Flame Detector

SKU
Spectrex-40/40C-L4B

Spectrex SharpEye 40/40C-L4B UV/IR Flame Detector

The SharpEye 40/40C-L4B, a dual spectrum UV/IR flame detector, provides fast detection of hydrocarbon-based fuel and gas fires in under five seconds.

The Spectrex SharpEye 40/40C-L4B UV/IR flame detector is capable of detection Hydrocarbon fuel and gas flames only and responds in typically under 5 seconds. The detector work with an integrated UV and optical IR sensor in the 4.5 micron band for hydrocarbon flame detection only. This allows for a higher false alarm immunity and greater detection capabilities than other regular UV/IR models on the market. With this proven record of false alarm immunity these Spectrex next generation 40/40-C-L4B flame detectors keep a SharpEye on your Safety!

Features and Benefits

Integrating UV and IR optical sensors for detection of hydrocarbon-based fuel and gas fires.

• Fast detection under five seconds

• Proven false alarm immunity

• Unparalled reliability - 150,000 hours MTBF

• Wide temperature range: -40 to +185 °F (-40 to +75 °C)

• Worldwide and regionally certified for hazardous areas

• Performance and reliability approved by recognable certification bodies

• SIL3 compatible

• Enhanced durability backed up by with three-year warranty

• Smart field of view integrity test, allowing flawless operation

• Innovative UV and IR Built-In-Test - continuously validating the optical integrity and the electronic circuitry

• Multiple output options for maximum compatibility with standard infrastructures

• Plug-and-Play - factory calibrated for immediate use in any fire detection system

• Universal wiring option for fast ordering process

• Three sensitivity levels, adapting to any application

• Two mode heated optics for impeccable performance in challenging environmental conditions

• Internal log event recorder to analyze past events

Table 1: Detection Ranges 

At the highest sensitivity setting for 1 ft.² (0.1 m²) pan fire

Fuel 40/40C-L4B
Gasoline 93 ft. (28 m)
N-Heptane 93 ft. (28 m)
Diesel fuel  70 ft. (21 m)
Kerosene 70 ft. (21 m)
Alcohol 95%  57 ft. (17 m)
Isopropyl alcohol (IPA)  70 ft. (21 m)
Methanol 57 ft. (17 m)
Methane 60 ft. (18 m)
Liquefied petroleum gas (LPG) 60 ft. (18 m)
Polypropylene  60 ft. (18 m)
Paper 33 ft. (10 m)
Hydrogen(1)  N/A
Magnesium alloy(2) 33 ft. (10 m) 
Gunpowder(3)  91.9 ft. (28 m)
Fireworks 9.8 ft. (3 m) 
Cooking oil 70 ft. (21 m) 
Mineral oil: 20W-50  70 ft. (21 m) 
Wood 33 ft. (10 m)
Ethylene glycol  23 ft. (7 m) 
Butyl acrylate 70 ft. (21 m)
Vinyl acetate  70 ft. (21 m)
Flammable adhesive 70 ft. (21 m)
Solvents 70 ft. (21 m)
Oil paint  70 ft. (21 m)
Jet fuel JP5 70 ft. (21 m)
Jet fuel A1 70 ft. (21 m)
Battery(4) 75 ft. (23 m) 

(1) 30 in. (0.75 m) high, 10 in. (0.25 m) wide plume fire.
(2) Contact Spectrex representative for guidance on detecting magnesium alloy.
(3) 1.5 in. x 1.5 in. (3.8 cm x 3.8 cm) wide, 4 in. (10 cm) tall.
(4) One Lithium-ion battery cell. Height: 2.6 in. (65 mm). Diameter: 0.72 in. (18.4 mm).

Table 2: General Specifications 

  40/40C-L4B
Spectral response Ultraviolet: 0.185 to
0.260 μm
Infrared: 4.3 to 4.8 μm
Field of view Horizontal: 100°
Vertical: 95°
Coverage area (m³) 474,912 ft. (13,448 m)(1)
Coverage area (m²) 6,598 ft. (613 m)(1) 
Sensitivity ranges Two sensitivity ranges
Detection response time Standard response: Typically < 5 seconds
Temperature range  Operating: –40 to +167 °F (–40 to +75 °C)
Storage: –40 to +167 °F (–40 to +75 °C) 
Humidity

Non-condensing relative humidity up to 100% 

(1) Gasoline and N-Heptane fuels.

Table 3: Electrical Specifications

Operating voltage  24 Vdc nominal (18 to 32 Vdc)
Cable entries  2 x ¾–in.–14 NPT conduits or 2 x M25 x 1.5 mm ISO 
Electrical input protection According to EN 50130
Electromagnetic compatibility  EMI/RFI protected to EN61000-6-3 and EN 50130
Electrical interface The detector includes 17 terminals and one wiring option

Table 4: Typical Power Consumption (24 Vdc) 

Mode 40/40C-L4B
Normal power consumption without a
heater 
90 mA, 2.2 W
Normal power consumption without a
heater, with an alarm
120 mA, 2.9 W
Standard power mode heater with alarm 320 mA, 7.7 W

Table 5: Outputs

Relays Alarm, fault, and auxiliary
SPDT volt-free contacts rated 2 A at 30 Vdc
Analog output default(1) Analog port malfunction: 0 V (< 0.5 V)
Normal: 2 V ± 0.3 V
Alarm/explosion: 5 V ± 0.3 V
0–20 mA (stepped) default(1) Fault: 0 ± 1 mA
Built-in test (BIT) fault: 2 mA ± 0.3 mA
Normal: 4 mA ± 0.3 mA
Warning: 16 mA ± 0.3 mA
Alarm: 20 mA ± 0.3 mA
HART® protocol  HART communication on the 0–20 analog current (Frequency-Shift Keying [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 computercontrolled installations 

(1) This output is configurable.


Table 6: Mechanical Specifications 

Enclosure options  Heavy-duty copper-free aluminum (less than 1%), polyurethane painted 
Mounting Electropolished stainless steel 316 
Dimensions Detector: 4 x 4.6 x 6.18 in. (100.6 x 117 x 155 mm)
Weight Detector aluminum: 2.8 lb. (1.3 kg)
Tilt mount: 2.5 lb. (1.1 kg)
Water and dust IP66 and IP68 per EN60529
NEMA® 250 6P 

You can order the Spectrex 40/40C as separate parts and accessories.
Spectrex 40/40C detector (PN 40/40C-X-64XAXXX). 

Model

Code Description
-I QuadSense™ triple infrared (IR3)
-M QuadSense triple infrared (IR3) with Hydrogen fire detection
-LB Ultraviolet/infrared (UV/IR) with Hydrogen fire detection
-L4B Ultraviolet/infrared (UV/IR)

Wiring

Code Description
-6 Universal

Operating temperature range

Code Description
–40 to +167 °F (–40 to +75 °C)

Electrical cable entries

Code Description
1 M25
2 ¾–in. NPT

Enclosure 

Code Description
A Aluminum polyurethane painted

Hazardous area approvals

Code Description
B INMETRO
F USA and Canada Explosion-Proof(1)
C ATEX/IECEx/UKCA 
R EAC CU TR 

(1) Aluminum enclosure: FM, FMC

Tilt mount 

Code Description
Y Including tilt mount stainless steel 316
N Without tilt mount

Protective cover 

Code Description
7 ABS plastic
8 Stainless steel 316 

Accessories

Part Number Description
FS-1100  Flame simulator (ex-proof) compatible with 40/40C-I model
FS-1200 Flame simulator (ex-proof) compatible with 40/40C-LB and 40/40C-L4B models 
FS-1400 Flame simulator (ex-proof) compatible with 40/40C-M model 
877090 Tilt mount 
877670 Flame detector duct mount assembly 
789260-2 Flame detector pole mount assembly, 2 in.
789260-1 Flame detector pole mount assembly, 3 in. 
789260-3  Flame detector pole mount assembly, 4 in. 
794079  USB RS-485 harness kit 
877650 Flame detector air shield assembly 
877263 Protective cover (Plastic) 
877163 Protective cover (Stainless steel)
877563 Field of view limiter
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