| 摘要 |
A psychrometer having transducers producing two electrical signals respectively representing dry bulb temperature and wet bulb temperature, and an electrical circuit operating to derive a signal representing relative humidity in accordance with the formula: <IMAGE> where RH is the relative humidity t is the dry bulb temperature t' is the web bulb temperature and alpha , beta , gamma , alpha ', beta ', and gamma ' are constants. The constants are chosen to give accurate results over the desired operating range of the psychrometer. Suitable values for many applications are: <IMAGE>
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