HTU20D Sensors, Transducers

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Humidity sensors, also known as hygrometers, measure the humidity of a given environment. The HTU20D is a digital humidity sensor from MEAS Switzerland, and it is an ideal choice for applications that require sustained accuracy in demanding environments.

Overview

The HTU20D measures relative humidity (RH) and ambient temperature using capacitive polymer film. It features highly accurate, digital calibration, low power demand, temperature and humidity feedback, and a sensing range of 0-100%RH and -10-85°C. The HTU20D is small in size, at only 12.5x13.0x2.8mm, and it has an integrated EEPROM for calibration and compensation data. It has a communication speed of up to 1Mb/s and connects through I2C. It is extremely reliable and stable, with an error rate of less than 2.5 %RH.

Applications

The HTU20D is used in many different applications, and it is especially popular for applications where high accuracy and stable performance are needed. It is commonly used in environmental monitoring, such as in building and industrial climate control. It is also used in security and medical monitoring systems. Additionally, it is used in agriculture and horticulture, to measure soil moisture and temperature for crop growth and overall crops health.

Working Principle

The HTU20D operates on capacitive sensing technology. It measures relative humidity and ambient temperature using a combination of polymer films and reference electrodes. The polymer films act as a humidity sensor when exposed to air, and the reference electrodes measure the resistance of this material. The resistance measured is then used to calculate a relative humidity. The temperature is measured using two thermal diodes, which are sensitive to temperature fluctuations. The data collected is then processed by a differential amplifier, which is used to accurately measure the humidity and temperature readings.

Conclusion

The HTU20D is a reliable, accurate digital humidity sensor used in many different applications. It operates using a combination of capacitive polymer films and reference electrodes, and it has an integrated EEPROM for calibration and compensation data. It has an excellent error rate and is stable in harsh environments. The HTU20D is a great choice for applications that require precise, high accuracy humidity and temperature readings.

The specific data is subject to PDF, and the above content is for reference