GS028-CO2 Infrared Carbon Dioxide (CO2) Gas Sensor

This dual-channel pyroelectric sensor is based on the single crystal pyroelectric effect of lithium tantalate (LiTaO3), with ultra-low noise field effect tube and high resistance gate resistance system to form a detection circuit. It is packaged in a TO-39 metal tube shell, containing two independent sensitive element chips, with thermal compensation function; The precision narrowband filter is used as the infrared optical window, and the reference channel center wavelength is 3.91μm and the signal channel center wavelength is 4.26μm. It can be widely used in CO2 NDIR gas detection and spectroscopic analysis.

Features:

High infrared responsivity, high signal-to-noise ratio

Dual-window packaging, high reliability

Electromagnetic interference (EMI) resistance

Built-in thermal compensation


Parameters:

Parameter


Typical

Unit

Remark

Window size


2.6*2.6

mm


Voltage response

Typical

400

V/W

500K,10Hz , 25℃ 

No window or filter

Noise

Maximum

250

nV/√Hz

10 Hz

Detection efficiency

Typical

 

1.6* 109

cm*Hz1/2*W-1

500K,10Hz ,25℃ 

No window or filter

Thermal time constant

Typical

150

ms


Electrical time constant

Typical

4

s


Working voltage

Typical

2-15

V


Source voltage

Typical

0.2- 1.5

V



Applications:

• NDIR CO2 gas detector

• Interior air quality monitoring

• Indoor air quality monitoring

• Central ventilation system and HVAC

NDIR CO2 sensor applications.png


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