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The temperature and humidity in life are two parts that are closely related to us. Still, the perception of this part is not detectable by the human eye but needs to be detected by the physical quantity itself. Temperature and humidity sensors have this purpose, mainly used to measure temperature and humidity in various environments.

With the accelerated development of society and industrial processes, the application of temperature and humidity sensors has been popularized in various fields of industrial life. In the broad application of products, many users do not grasp the precautions when using the products they purchased, resulting in inaccurate measurement data when using the products to detect temperature and humidity. The following is a brief description of the precautions during the use of the temperature and humidity sensor:

First of all, you need to know the measurement range when you choose and pay attention to what interval value the instrument you purchased is measuring. Because some sensors measure relative humidity and some are absolute humidity, ask the manufacturer or read the label.

The second, the impact of drift. Due to the influence of dust, oil and harmful gases in practical applications, the instrument will age with the extension of use time. Therefore, users need to consider the problem of reduced accuracy. Usually, the annual drift of the product is about plus or minus 2%, or even higher; the user should recalibrate the temperature and humidity range according to the validity period indicated in the product manual.

Finally, measurement accuracy is also the most important indicator for selecting a temperature and humidity sensor. Users should consider the company's needs when purchasing, not blindly pursuing precision, but buying the precision they need to improve the cost-effectiveness. Under different ambient temperatures, the indicated value should also consider the influence of temperature drift.

At present, Guangzhou Aosong Electronics Co., Ltd. has launched the third-generation integrated temperature and humidity sensor AHT21, which is an accurate and reliable humidity measurement sensor. AHT21 is equipped with a newly designed ASIC special chip, an improved MEMS semiconductor capacitive humidity sensor element and a standard on-chip temperature sensor element. Its performance has been dramatically improved or even exceeded the reliability level of the previous generation of sensors. A generation of temperature and humidity sensors has improved their performance in harsh environments more stable.

The integrated temperature and humidity sensor AHT21 of Aosong Electronics is ultra-low power consumption, high-precision digital output temperature sensor. It has many advantages such as I2C interface digital output, excellent long-term stability, rapid response, strong anti-interference ability, etc. It is widely used in HVAC, dehumidifier, testing and inspection equipment, consumer products, automobiles, automatic control, data loggers, meteorology Stations, home appliances, humidity control, medical and other related temperature and humidity detection and control.