Humidity has been closely related to people’s lives since ancient times, but humidity data is difficult to display and control for a long period of time, with the continuous development of science and technology and several years of research and exploration, now we have humidity sensors, which can accurately and timely measure and observe humidity data. Humidity sensors have been discovered through innovation and iteration, and there are now quite a few types. Humidity Sensors There are two types of moisture sensors: resistive humidity sensors and capacitive humidity sensors. Humidity can be measured by coating the substrate with a film made of a moisture-sensitive material, and when water vapor from the air is adsorbed on the moisture-sensing film, the resistivity and resistance values of the component change. Moisture-sensitive capacitors are generally made of polymer film capacitors, and commonly used polymer materials include polystyrene, polyimide, butyric acid acetate, etc. When the ambient humidity changes, the dielectric constant of the moisture-sensitive capacitor changes, and its capacitance also changes, and its capacitance changes proportional to the relative humidity. In terms of structure and installation form, humidity sensors can be divided into wall-mounted humidity sensors, plug-in humidity sensors, split humidity sensors, outdoor humidity sensors, etc. The wall-mounted humidity sensor is mainly used to measure the humidity of the indoor environment, and can be directly installed on the wall to adapt to the height. The environment is simple to use and the installation is also very convenient. Plug-in humidity sensor, mainly used in ventilation ducts, heating and air conditioning systems, constant temperature and humidity control boxes and other environments, plug-in humidity sensors also have mounting flanges, which is convenient for the sensor to be fixed outside the housing or cavity. The split humidity sensor can separate the display head of the transmitter from the measurement area, which is more convenient for humidity measurement and data monitoring requirements in special environments. The outdoor humidity sensor is designed with a special radiation shield to protect the sensor from rain, sun and UV radiation. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi, 400-600-4496!