Flame Sensors

IR SENSO R

F IRE

www.Talentum.co.uk

Introduction

• Detects Open Flames & Glowing Embers

• Sensitive to Flickering IR or UV/IR Emitted by Flames

• Low Power 24Vdc Operation, 4-20mA or Relay Interface

Why use a Flame SensorHeat & smoke detection are the most economical method

• Unaffected by convection currents, draughts or wind

• IR sensors are tolerant of fumes, vapour, steam, dust and mist

• Detection at over 25m away

• Fast reaction

If detection is required to be:

Applications

• Aircraft hangars• Automotive industry

– spray booths, – parts manufacture

• Coal handling plant• Pharmaceuticals

- fume cupboards

• Paper manufacture• Power plants• Textiles

- dust collection - fillings

• Waste handling• Woodworking

Applications to Avoid

• Ambient temperatures above 55°C• Where the detector may view -

Flickering or moving hot objects (>200 °C) Sunlight falling directly onto IR optics Flood or spot lights directly on optics Large amounts of flickering reflections

• Exposure to severe weather• Close proximity to RF sources

Theory of Operation

Detector Optics

Signal Processing

Input/Output Interface

• Detector Optics

A

B

Optical Spectra

UV | Visible | Near IR0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

Wavelength -m

Inte

nsity

Detector Optics

UV |Visible| Near IR | Mid. IR0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

Wavelength -m

Inte

nsity

6000K Black body, SunHydrocarbon Flame

4.3

B

A

A B

Talentum IR Detectors

Other Types 4.3µm

Excluding Atmospheric Absorption

Types of Sensors Available

UV Visible Near IR Mid IR

Optical Spectrum0.4µm 0.75µm 3.0µm

£1,000

£100

Low

Hig

hest

Imm

un

ity

to F

alse

So

urc

es

Typical Sensor

Cost

Detection Methods

UV

4.3 µm Single IR

Dual IR

(IR²)

Talentum Flame Sensors

Triple IRUV/IR

Flame Sensor Selection

Applications- Dark Ducts

- Dust Collectors- Textiles & W oodworking

Single IRLow Im m unity to false sources

- Lowest Cost- Fastest Response Tim e

Applications- Fum e Cupboards

- Power P lants- W aste Handling

Dual IR (IR²)H igh Im m unity to false sources

Application- Aircraft Hangars

- Generators- W aste Tips

UV/IR²Highest Im m unity to false sources

- H ighest Cost

Type of Flam e Sensorfor Application

Theory of Operation

• Detector Optics

Detector Optics

Signal Processing

Input/Output Interface

• Signal Processing

A

B

0

20

40

60

80

100

0 10 20 30 40 50 60

Hz

Flic

ker S

igna

l - % Flame Flicker Frequency Spectra

Signal Processing

Typical Flame Flicker

0

20

40

60

80

100

0 10 20 30 40 50 60

Hz

Flic

ker S

igna

l - %

Typical Flame

+ Energetic Flame Flicker

0

20

40

60

80

100

0 10 20 30 40 50 60

Hz

Flic

ker S

igna

l - %

Energetic Flame

Typical Flame

Theory of Operation

Detector Optics

Signal Processing

Input/Output Interface

• Signal Processing• Input/Output Interface

• Detector Optics

A

B

Input/Output Connections

+IN -IN

Remote Test Input

R+ R- FLAME (N/O)

Relay RL1

FAULT (N/C)

Relay RL2+24Vdc

Supply Input

1 2 3 4 5 6 7 8

Normally closed (N/C) when

powered

Closes if flames detected

Selecting Options (Series 16000)

DIL Switch SENSITIVITY

Low Class 3High Class 1

01

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

Output Signalling (Series 16000)

• Quiescent/Alarm Current Selectable Options 3 / 9mA Min. + Flame Relay (RL1) 4 / 20mA No Relays 8 / 20mA or 8 /28mA

+ Flame & Fault Relays (RL1 & RL2)

• Latching or Non-latching

Flame Sensor (Series 16000)

24Vdc Supply Voltage

1

2

+

-

Current (mA)

Output Interface Option

0

4

8

12

16

20

mA

- 0 1 2 3 4Time (Seconds)

4-20mA P roportional Output (Non-latching)

Typical Response on seeing Flame

Output Interface Option

0

4

8

12

16

20

mA

0 2.5 5 7.5 10 12.5Time (Seconds)

4-20mA P roportional Output (Non-latching)

Typical Response after last Flame is seen.

Output Interface Option

0

4

8

12

16

20

mA

0 1 2 3 4 5 6 7 8Time (Seconds)

4-20mA P roportional Output (Non-latching)

Typical Response to a Burst of Flame

Output Interface Option

0

4

8

12

16

20

mA

- 0 1 2 3 4 5Time (Seconds)

8-20mA Latching Output

Typical Response on seeing Flame - Break supply to reset

Sensor Performance

• Class 1 performance as defined inEN54:Part 10 Flame detectors – point detectors

Yellow flickering flame of approximately 0.1m²

or

clear flame of 0.25m²

at

25m

Sensor Performance

0.1m² flicking yellow flame at 25m

0.1m² 0.4m² flicking

yellow flame at 40m

0.4m²

Selection of Fires Tested

• Coal

• Cotton

• Grain & Feeds

• Paper

• Refuse

• Wood

Or just Dust from the above

Solids Liquids Gases

• Aviation Fuels

• Ethanol

• Methylated Spirits

• n-Heptane

• Paraffin

• Petrol

• Butane

• Fluorine

• Hydrogen

• Natural Gas

• Off Gas

• Propane

Sensitivity Setting

• Class 1 is the normal setting (High)

• Class 3 reduced sensitivity (Low)

DIL Switch (Front cover removed)

DIL Switch SENSITIVITY

Low Class 3High Class 1

01

1 2 3 4 5 6 7 8

Sensor Field of View

IR SENSO R

F IRE 90° Cone

Sensor Field of View

-75°

-90°0 25m

-15°

-45°

-60°

-30°

0°

30°15°

40m

75°

90°

60°

45°

Calculation of Detection Distance

IR SENSO R

F IRE

LengthWidth

Height

HWL² ² ²+ +=

example 51020 ² ² ²+ +=22.9m

Installation Accessories

Stainless Steel Adjustable Mounting Bracket

Talentum Part No: 007127 Typical Arrangement

Installation Accessories

Stainless Steel Weather Shield

Talentum Part No: 012545Typical Arrangement

Testing & Commissioning

a. Self test by applying 24Vdc to Terminals 3 & 4

- Activates IR Test Source within Detector & Flashing Yellow LED -

b. The best way to test a flame detector is with a real flame.

c. Simulated Flame Testing.*

6 912

6 913

7

4

W X YZ

0 #

P Q R S8

T U V9

M N O5

J K L6

G H I

F4F2 F3F1

1D E F

2A B C

3

F LA M E S EN SO R TES T U N IT

S U P P LY

S IG N A L

Talentum Part No: 016091

Talentum Part No: 010018

Thank You