德国Coreci公司研究开发了一种电介质为聚合物的电容器作为传感器来测量相对空气湿度,其电极是蒸镀的,对相对空气湿度具有足够的扩散功能。这种测量元件电容约为500pF。当塑料膜吸收湿气时,电容器的电容量就产生变化,其平均灵敏度为0.8pF/相对湿度变化百分数,引人注目的是其线性度优于2.5％相对空气湿 Germany Coreci company developed a dielectric polymer capacitor as a sensor to measure the relative humidity, the electrode is evaporated, the relative air humidity has enough diffusion function. The capacitance of this measuring element is about 500pF. When the plastic film absorbs moisture, the capacitance of the capacitor changes, with an average sensitivity of 0.8 pF / percent change in relative humidity, notable for its linearity better than 2.5% relative humidity