hygrograph


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Related to hygrograph: rain gauge, wind vane

hygrograph

[′hī·grə‚graf]
(engineering)
A recording hygrometer.

Hygrograph

 

an instrument for continuously recording the relative humidity of the air. The sensitive element of a hygrograph is a bundle of degreased human hair or organic film (see HYGROMETER). Recording is done on a calibrated ribbon mounted on a drum, which is rotated by a clock mechanism. The drum on a hygrograph may rotate once a day or once a week.

hygrograph

A self-recording hygrometer.

hygrograph

hygrograph
A self-recording instrument that provides a continuous record of relative humidity on a drum-mounted chart known as a hygrogram.
References in periodicals archive ?
The mean daily temperature (Tmd) was calculated by the following equation that calculates the arithmetic mean of the temperatures ([degrees]C) recorded by the thermos hygrograph every two hours during the whole day: