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Infrared Thermopile Sensor

Infrared Thermopile Sensor

Infrared Thermopile Sensor can measure the temperature without contact by detecting the infrared energy of an object. And the higher the temperature, the more infrared energy is produced. Thermopile sensing elements consist of small thermocouples on silicon chips that absorb energy and produce output signals.


Technical Data of Infrared Thermopile Sensor

Parameter        

Min.

Typ.

Max.

Unit

Conditions

Chip size


1.1X1.1


mm²


Sensitive area


0.35X0.35


mm²


Detection angle  


90


°


Thermopile resistance  

80

98

115

KΩ

Temp=25℃

Noise voltage


38


nV/Hz½

Temp=25℃

NEP


0.23


nW/Hz½

Blackbody=500K,1Hz@25℃

Voltage Response


20.11


Vm m²/w

Blackbody=500K,1Hz@25℃

Responsivity

134

164

194

V/w

Blackbody=500K,1Hz@25℃

Temp. coefficient of resistance


0.06


%/℃

Temp=25℃～ 75℃

Time constant


<=13


ms


Specific detectivity


1.51 E08


cmHz½/w

Blackbody=500K,1Hz@25℃

NTC Resistance


100±3%


KΩ

25℃

NTC β


3950±1%


K

25/50℃


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FAQ
  • Is Wave Soldering Recommended?

    Wave soldering is likely to cause degradation of product performance. Wave soldering is not recommended. Generally we recommend to solder by hand.


  • Can PIR Sensor Detect Animals?

    PIR sensors are excellent in human and animal detection. They are mostly used in triggering an intruder alarm and activate household appliances upon the presence of a human.

  • Do PIR Sensors Work Through Glass?

    No, alarm motion sensors do not work through glass. Most motion sensors use passive infrared (PIR) technology to detect motion. Changes in IR energy are not easily detected through glass. This is why motion sensors will generally not work through windows, which are usually insulated.


  • What Is The Package?

    1. PIR sensor: Graphic Carton-> Carton

    2. LDR: plastic bag -> Graphic Carton -> Carton

    3. Fresnel Lens: plastic bag -> Carton


  • What are the Factors that Affect the Performance of the Product?

    1. When there is dirt on the window, it will affect the detection performance.

     

    2. When the ambient temperature and the human body temperature are close, the detection and sensitivity are significantly reduced, sometimes causing short-term failure. The recommended minimum temperature difference between the ambient temperature and the human body temperature needs to reach at least 4 ° C.

     

    3. When designing the circuit, pay attention to anti-interference measures to prevent false alarms caused by radio frequency interference.


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