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湿敏电阻是一种电阻值随环境相对湿度变化的敏感元件。它主要由感湿层、电板和具有一定机械强度的绝缘体组成,其结构如图1所示。感湿层在吸收了环境中的水分后,引起电极间阻值的变化,这样就能直接将相对湿度转换成相应的电阻值。湿敏电阻根据感湿层所用材料和配方不同,有正电阻湿度特性和负电阻湿
Humidity resistance is a sensitive element that changes with the relative humidity of the environment. It mainly by the wet layer, the electric plate and a certain mechanical strength of the insulator composition, the structure shown in Figure 1. After the wet layer absorbs the moisture in the environment, it causes the change of the resistance between the electrodes, so that the relative humidity can be directly converted into the corresponding resistance value. Humidity resistance sensor based on the material used and the wet layer of different formulations, there are positive resistance and humidity characteristics and negative resistance wet