| 摘要 |
<p>In a method of measuring humidity of an oxygen-containing gas by using an electrochemical cell (1), firstly a voltage is applied across the pair of the electrodes (12), (13) to obtain a characteristic curve between an intensity of the voltage and that of electrical current, the characteristic curve continuously originating from a first flat portion in which a first diffusion limit current generally remains constant within a predetermined voltage range, and ending up in a second flat portion in which a second diffusion limit current generally remains constant within a predetermined voltage range. Secondly each value of the first diffusion limit current and the second diffusion limit current is read out, and an arithmetic ratio between the value of the first diffusion limit current and that of the second diffusion limit current is calculated to obtain the humidity of the gas. <IMAGE></p> |
