Lithium chloride dew point hygrometer for the measurement of the relative humidity

摘要

Lithium-chloride dew point hygrometer Two sensors, one for gas temp. the other for the boiling point of the LiCl are connected to a feed back amplifier whose feed back network compensates for non-linearity of the sensors over a wide temp. range. This is a pi-network containing two similar temp. dependent resistors e.g. thermistors type Ni25. It is effective over a temp. rnage of at least 60 degrees without range switching.