Thermohygrograph

A Thermohygrograph (also thermal Hygrograph ) is a combined recording device for simultaneously measuring and recording the air temperature and relative humidity during a certain time. The individual devices are the thermograph and the Hygrograph. Thermohygrographs are mainly used in meteorology as part of weather stations, but can also be found in museums, home automation, storage and transport as well as in the construction industry (eg, in the building repair and sealing) application.

Classical models are implemented as a drum recorder using bimetal, natural hair, and a mechanical or electronic clockwork, the drum may have an orbital period of one, seven, 14, or 31 days. The measured values ​​are recorded as traces on paper.

• Meteorological instrument
• Temperature measurement