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The SGP40 is a digital gas sensor designed for easy integration into air purifiers or demand-controlled ventilation systems. It offers a complete, easy-to-use sensor system on a single chip featuring a digital I2C interface and a temperature-controlled micro hotplate, providing a humiditycompensated VOC based indoor air quality signal.
The output signal can be directly processed by Sensirion’s powerful VOC Algorithm to translate the raw signal into a VOC Index as a robust measure for indoor air quality.
The VOC Algorithm automatically adapts to the environment the sensor is exposed to. Both sensing element and VOC Algorithm feature an unmatched robustness against contaminating gases present in real-world applications enabling a unique long-term stability as well as low drift and device-to-device variation.
Package included:
1 * SGP40 TVOC eCO2 CO2 Carbon Dioxide Sensor
Robert M. Soto
Reviewed in the United States on December 24, 2023
Doesn't seem to hold accurate measurements for more than an hour. I'm having to restart the process/processor almost every hour to recalibrate... Is this normal or are these products 2nds / B-grade from factory?
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