Current Model Range and Characteristics

Comparison of Flame Detector Types

Fire Size and Maximum Detection Distances 

Recommended Type of Flame Detector for Specific Fuels/Fires

 

Current Model Range and Characteristics

 

Model Number* Detector Type

Max. Detection Range** 

 ft (m)

Response Time 

(Typical)

Description

40/40U-UB

20/20U-UB

UV 50 (15) 3 sec. UV detector for indoor applications, detects organic and inorganic flames

40/40L-LB

20/20L-LB

UV/IR 50 (15)

5 sec. 

(150 msec.)

Dual UV/IR for detection of organic and inorganic flames for indoor and outdoor applications
40/40L4-L4B UV/IR 50 (15)

5 sec. 

 (150 msec.)

Dual UV/IR for detection of hydrocarbon fires
20/20F UV/IR 20 (6) Max. 5 msec.  High Speed UV/IR Flame Detector with high reliability and immunity to false alarms

40/40R

20/20R

IR 50 (15) 5 sec. Single IR Detector for hydrocarbon fires for indoor applications

40/40I

20/20SI (SIL)

Triple IR (IR3)

215 (65)

200 (60)

5 sec. Triple IR (IR3) offers two to three times the detection distance of single IR or UV/IR detectors and the highest immunity to false alarms. This model includes heated optics, HART and complies with SIL-2
20/20SI Triple IR (IR3) 200 (60) 5 sec. Triple IR (IR3) as above but without heated optics, HART and SIL-2
40/40M Multi IR

HCs - 215 (65)

 H2 -100 (30)

5 sec. Special design for the detection of invisible hydrogen flames and hydrocarbon fires
20/20FI Triple IR (IR3) 33 (10) 0.2-1 sec. High Speed Triple IR (IR3) Model for industrial applications
20/20CTIN & CTIP CCTV - IR3 200 (60) & video 100 (30) 5 sec. CCTV Flame detector is a Triple IR (IR3) detector that incorporates a video color camera
20/20MI Triple IR (IR3) 133 (40) 5 sec. Triple IR performance in a compact design with 80% less power consumption
20/20ML UV/IR 50 (15) 5 sec. Special compact design UV/IR flame detector for industrial applications 
20/20SH Triple IR (IR3) 100 (30) 5 sec. Special design IR3 detector for invisible Hydrogen fires

 

* All models, except those noted below, have automatic and manual Built-in-Test (BIT) to verify proper operation and cleanliness of lens.

 

Models without BIT:

- 20/20U, 20/20F and 20/20L  

- 40/40U, 40/40L and 40/40L4

 

** Max detection range based upon a 1ft2 (0.1 m2) gasoline / heptane pan fire.

Note: All 40/40 Models incorporate heated optics, HART and comply with SIL-2 requirement.

 

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Comparison of Various Types of SharpEye Flame Detector 

 

Each of the Spectrex flame detector families uses one or more of the Ultraviolet (UV) and/or Infrared (IR) techniques. However, each family is recommended only for specific applications, usually determined by evaluating to what extent false alarms could create problems.

 

Detector Type Applications   Advantages   Disadvantages 
Triple IR (IR3)
  • Hydrocarbon fires
  • Indoors and outdoors
  • Moderate speed
  • Highest sensitivity
  • High immunity to false alarms
  • Longer detection range
  • Unaffected by solar radiation
Affected by IR sources only at short range in certain rare fire scenarios
Multi IR
  • Hydrocarbon and Hydrogen fires
  • Indoors and outdoors
  • As IR3 but with hydrocarbon and hydrogen fire detection
  As IR3
Hydrogen (IR3)
  • Hydrogen fires only
  • Indoors and outdoors
  • Detects invisible Hydrogen flames
  • Longer detection range
  • High immunity to false alarms
  • Unaffected by solar radiation
Not to be used for Hydrocarbon fire detection
CCTV (IR3+Video)
  • Hydrocarbon fires
  • Indoors and outdoors
  • As IR3 but with color video
  • More information & record of the protected area before, during and after fire scenario
As IR3
Dual Band UV/IR
  • Hydrocarbon, Hydrogen, Silane, Ammonia, other hydrogen-based fuel fires and Metal fires
  • Indoors and outdoors
  • Moderate speed
  • Moderate sensitivity
  • Low false alarm rate
  • Unaffected by solar radiation

Affected by specific UV/IR ratio created by false stimuli

 

Blinded by thick smoke, vapors, grease and oil deposits on the detector window

Single I (IR)
  • Hydrocarbon fires
  • Indoors
  • Moderate speed
  • Moderate sensitivity
  • Unaffected by solar radiation
  • Low cost
Subject to false alarms (in the presence of flickering IR sources)
Single Ultraviolet (UV)
  • Hydrocarbon, Hydrogen, Silane, Ammonia, other hydrogen-based fuel fires and Metal fires
  • Indoors
  • High speed
  • Moderate sensitivity
  • Unaffected by solar radiation
  • Unaffected by hot objects
  • Low cost

Subject to false alarms from UV sources (arc welding, electrical sparks, halogen lamps)

 

Blinded by thick smoke, vapors, grease and oil deposits on the detector window

 

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Fire Size and Maximum Detection Distances

 

The following table lists typical detection distances for different types of SharpEye Flame Detectors and for a range of fuels.

 

 

 

Fuel

 

 

Fire size

 40/40I   

 

 

 

IR3

20/20SI 20/20CTI

 

 

IR3

 20/20 

MI-1

 

 

IR3

40/40L-LB & 20/20L-LB

UV/IR

 40/40L4-L4B    

 

 

UV/IR

40/40U-UB &  20/20U-UB

UV

40/40R

 & 20/20R 

 

IR

 40/40M   

 

 

 

Multi IR  

20/20SH

  

 

 

IR3 H2

Gasoline

 

 

 

 

1ft2

(0.1 m2) pan fire

215 (65)

200 (60)

132 (40)

50 (15)

50 (15)

50 (15)

50 (15)

215 (65)

-

n-Heptane

215 (65)

200 (60)

132 (40)

50 (15)

50 (15)

50 (15)

50 (15)

215 (65)

-

Diesel Fuel

150 (45)

150 (45)

89 (27)

36 (11)

36 (11)

36 (11)

36 (11)

150 (45)

-

JP5

150 (45)

150 (45)

100 (30)

36 (11)

36 (11)

36 (11)

36 (11)

150 (45)

-

Kerosene

150 (45)

150 (45)

100 (30)

36 (11)

36 (11)

36 (11)

36 (11)

150 (45)

-

Alcohol (Ethanol)

135 (40)

90 (27)

100 (30)

25 (7.5)

25 (7.5)

36 (11)

25 (7.5)

135 (40)

63 (19)

 IPA (Isopropyl Alcohol)

130 (40)

90 (27)

100 (30)

25 (7.5)

25 (7.5)

36 (11)

25 (7.5)

135 (40)

-

Methanol

116 (35)

76 (23)

80 (24)

25 (7.5)

25 (7.5)

25 (7.5)

25 (7.5)

116 (35)

26 (8)

Methane

20"

(0.5 m) Plume fire

100 (30)

66 (20)

40 (12)

16 (5)

16 (5)

40 (12)

16 (5)

100 (30)

-

LPG (Propane)

100 (30)

66 (20)

40 (12)

16 (5)

16 (5)

40 (12)

16 (5)

100 (30)

-

Hydrogen

-

-

-

16 (5)

-

 33 (10)

-

100 (30)

100 (30)

Polypropylene Pellets

8" (0.2m) Ø pan fire

16 (5)

16 (5)

16 (5)

16 (5)

16 (5)

20 (6)

13 (4)

16 (5)

-

Office Paper

1ft 2 (0.1m 2) pan fire

33 (10)

66 (20)

50 (15)

16 (5)

16 (5)

20 (6)

20 (6)

33 (10)

-

 

(1) 20/20SI and 20/20CTIN-CTIP 
(2) 20/20L-LB and 20/20ML 40/40L-LB, 40/40L4-L4B
(3) 20/20U-UB, 40/40U-UB  
(4) 20/20R, 40/40R 
(5) 20/20SH
(6) 40/40M
(7) 40/40I   
-Does not detect  

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Recommended Types of Fire Detectors

 

Fire Source

 UV (a)

 IR (b)

 UV/IR (c)

 IR3 (d)

Hydrogen (e)

Multi IR

Gasoline

1

1

1

1

4

1

Diesel Fuel

2

2

2

2

4

2

N-Heptane    

1

1

1

1

4

1

Kerosene

2

2

2

2

4

2

JP8/JP4/JP5

2

2

2

2

4

2

Alcohol (Ethanol)

2

2

2

2

2

2

Methane

2

3

3

3

4

3

LPG

2

3

3

3

4

3

Hydrogen

2

4

3

4

1

2

Petrochemicals

1

1

2

1

4

1

Metals

2

4

3

4

4

4

Propellants (Black Powder) 

1

3

2

3

4

3

Textiles (Cotton)

3

3

3

3

4

3

Aromatic Solvents

2

2

2

2

4

2

Wood, Paper

3

3

3

3

4

3

Bonding Glue Substances

2

2

2

2

4

1


(a) 20/20U-UB, 40/40U-UB
(b) 20/20R, 40/40R
(c) 20/20L-LB, 20/20ML, 20/20F, 40/40L-LB, 40/40L4,L4B
(d) 20/20SI, 20/20XI, 20/20MI, 20/20FI, 20/20CTIN/CTIP, 40/40I 
(e) 20/20SH
(f) 40/40M

(1) 100%-75% of the detector sensitivity
(2) 75%-50% of the detector sensitivity
(3) 50%-25% of the detector sensitivity
(4) Not suitable
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