Principle Introduction:
RD-913FB5 pyro-electric flame sensor uses lithium tantalate single crystal as the sensitive element material. The Curie temperature of lithium tantalate crystal material is above 600℃, the relative dielectric constant is small, and the specific detectivity is high.

In a wide range of room temperature, the pyroelectric coefficient of the material changes very little with temperature, and the temperature change rate of the output signal is only 1-2‰. The temperature stability of the sensor performance is very good, and the spectral response consistency is very good in the wavelength range of 1-20um.

Applications :
Fire detection devices in oil storage stations, large warehouses, factory workshops, forests, and charging piles;

High fire risk area configuration like petroleum, chemical, paper-making, forests, and garages.

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Item

Typical

Unit

Window Size

5.05.0

mm

Sensitive element size

Φ2.5

mm

Filter center wavelength

4.45

um

Electrical time constant

5

s

Thermal time constant

200

ms

Source Voltage

0.4~0.7

v

Working Voltage

2~15

v

Recommended voltage

3~5

v

Output signal V0

(500K,10HZ,25℃)

3.6±10%

v

Output noise voltage VN

(10HZ, BW1HZ, 25℃)

≤150

mv

Voltage response rate (no window) Rv (500K, 10HZ, 25°C)

≥500

v/w

Specific detection rate (no window) D (500K, 10HZ, BW1HZ, 25℃)

≥5×108

cmHz½/W

Field of view(FOV)

>115

°

Detection distance

35~50

m

Working temperature

-30~+75

℃

Storage temperature

-40~+80

℃

Remarks: The magnification of the testing machine is 80dB.

Reference Circuit :

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Item	Typical	Unit
Window Size	5.0*5.0	mm
Sensitive element size	Φ2.5	mm
Filter center wavelength	4.45	um
Electrical time constant	5	s
Thermal time constant	200	ms
Source Voltage	0.4~0.7	v
Working Voltage	2~15	v
Recommended voltage	3~5	v
Output signal V0 (500K,10HZ,25℃)	3.6±10%	v
Output noise voltage VN (10HZ, BW1HZ, 25℃)	≤150	mv
Voltage response rate (no window) Rv (500K, 10HZ, 25°C)	≥500	v/w
Specific detection rate (no window) D* (500K, 10HZ, BW1HZ, 25℃)	≥5×108	cmHz½/W
Field of view(FOV)	>115	°
Detection distance	35~50	m
Working temperature	-30~+75	℃
Storage temperature	-40~+80	℃
Remarks: The magnification of the testing machine is 80dB.