Glossary /­ FAQs /­ LexiconTemperature measuring equipment

A strip composed of two different metals which are welded together.
The two different heat expansion coefficients of these metals lead to a temperature-dependent curvature of the welded metal. This curvature respectively deflection is a measure of the upcoming temperature.

For the measurement of the current and highest temperature of the preceding measurement period.
A pin is pushed forward through the meniscus of the mercury filament by raising temperature, and remains with the maximum temperature value when the temperature drops. The thermometer is used in horizontal position.

Combination of a min.- and a max. -thermometer to measure the current, the lowest and the highest temperature of the preceding measurement period.

For the measurement of the current and lowest temperature of the preceding measurement period.
A pin in the alcohol filament is pushed back by the surface tension of the alcohol, and remains with the minimum temperature value when the temperature increases.

The ambient temperature as perceived by the human body affected by the wind. It is calculated from the “wind-chill” factor.

Is a temperature sensor with a measurement coil made of platinum wire. The temperature-dependent resistance-change of the platinum wire is used as measure for the temperature.100 Ω for 0 °C is used as basic value. The resistance-change is defined in the DIN IEC 60751 standard.

Measurement instrument to measure the temperature above the soil, preferably at a height of 5 cm. The German Weather Service uses sensors without radiation protection only to measure the minimum temperature.

Measurement instrument to measure the air temperature in soil at different depths.

Electrical temperature measurement instrument with an electrical measured value output.

Measurement instrument which mechanically records the temperature as a function of time.

General term for a temperature measurement instrument.

The loss of heat by the human body through the wind.
The “perceived temperature” is derived from this factor.