The sensor is an information detecting device, which can convert the sensed measurement information into a form required for electrical signals or other signals according to a certain rule, and is used for information transmission, processing, storage, and the like. Nowadays, various new gas sensors have provided tremendous help for the development of the industry. Digital temperature and humidity sensors play a vital role in smog monitoring.
At present, PM2.5 monitoring in China usually uses continuous monitoring methods, such as micro-oscillation balance method and β-ray attenuation method, to monitor the deposition quality of the approximate site. Such monitoring methods are very demanding on the accuracy of data such as air temperature, humidity, and airflow rate. A little deviation can make the monitoring results very different. In this regard, domestic and foreign related companies have stepped up research and development of sensors for PM2.5 monitoring equipment, and many high-tech products with high sensitivity and precision have been put on the market. Shenzhen Industrial Mining Network introduced the digital output temperature and humidity sensor of Humirel Company of France to H2.521 for PM2.5 monitoring equipment. It has excellent reliability, repeatability, accuracy and responsiveness, which can keep PM monitoring accuracy and stability in the PM. Best state.
The HTU21D temperature and humidity sensor is available in a DFN package suitable for reflow soldering and measures only 3 x 3 x 1mm; it provides a calibrated, linear I2C digital output signal. The humidity and temperature signals of the digital outputs can be interfaced directly to the microcontroller. Each sensor is calibrated and tested, and the lot number is printed not only on the housing but also on the sensor chip for reading by instruction. The user can change the resolution of the HTU21D (8/12bit to 12/14bit) by command. It can also detect low power and checksums are used to improve communication reliability. Low power consumption, high cost performance, and small size make it suitable for OEM high volume applications where price sensitivity and installation space are limited. I believe that in the near future, the "haze" will be swept away on our heads, and the blue sky will be re-polished.
As an important chemical sensor, temperature and humidity sensors are used in industries such as engines and motor vehicles, medical, industrial control, consumer electronics and household appliances.
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