Hygrograph

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Hygrograph

A hygrograph is a meteorological measuring device for recording and recording the humidity in a continuous, temporal course. It is therefore a recording hygrometer that controls a writing arm via its specific input measuring method. This in turn has a writing attachment at its tip, with which it transfers the course of the air humidity or the corresponding humidity level to a rotating paper drum and thus displays it graphically. Hair hygrometers are the most frequently used input measurement method and show the course of the relative humidity. The time span of the registration is determined by the speed of rotation of the paper drum. In weather stations , hygrographs are usually implemented together with a thermograph , which is referred to in the following as a thermohygrograph .