RTGA71 Thermopile Gas Sensor
For CO2 Detection
Applications :
*NDIR (CO2) Gas Detection device;
*CO2 gas control in industrial workshop;
*CO2 emission control of combustion furnace.
Product Advantages:
- *TO-46 metal package
- *High sensitivity
- *Quick response, Good stability
- *High transmittance of narrowband filter
- *High precision NTC
Product Description:
RTGA71 sensor is a single-channel thermopile gas sensor, which contains a thermopile chip based on MEMS technology and connects hundreds of pairs of thermocouples in series, to convert the absorbed infrared radiation into a voltage signal. There is a narrow-band filter in the front of the sensor, and the sensor can be used for the detection of carbon dioxide concentration. The sensor NTC itself has temperature compensation, to improve the measurement accuracy.
Technical Parameters:
| Parameter | Value | Unit | Remarks |
| Chip size | 1.35×1.35 | mm | / |
| Field of view | 95 | Degree | Above 50% |
| Filter center wavelength | 4.26 | um | |
| Thermopile resistor | 76±10 | KΩ | 25℃,1V |
| Noise voltage | 38 | nV/Hz1/2 | 25℃ |
| Noise equivalent power | 0.23 | nW/Hz1/2 | 500K, 1Hz, 25℃ |
| Response rate | 160±40 | V/W | 500K, 1Hz, 25℃ |
| Temperature coefficient of resistance | 0.06 | %/℃ | 25℃~75℃ |
| Time constant | ≤13 | ms | |
| ChipDetection rate | 1.5 ×108 | cmHz1/2/W | 500K, 1Hz, 25℃ |
| NTC resistance | 100 ±1％ | KΩ | 25℃ |
| NTC(β) | 3950 ± 1％ | / | 25℃/50℃ |
| Working temperature | -30 ~ 125℃ |
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