Thermometer And Measuring Device For Fluids

Abstract

The invention relates to a thermometer. The thermometer has at least one temperature sensor, having a physical variable which changes in a characteristic manner depending on temperature, at least one electrical output for emitting a signal which is a measure for the value of the variable, a transmitter for a sound wave or an electromagnetic wave, which transmitter can be coupled to the temperature sensor and controlled thereby depending on the variable's value, or can radiate the wave at least in part towards the temperature sensor, the wave-temperature sensor interaction depending on the variable's value, and either a wave receiver, which reconverts the wave into an electrical signal, or another unit for converting the wave-temperature sensor interaction into an electrical signal, connected to the electrical output. It has been recognized that the wave transmits signal, so that the temperature sensor is galvanically decoupled from the environment, and the temperature sensor can significantly better thermally to the place or to the medium whose temperature is to be measured.

Description

technical field [0001] The invention relates to a thermometer and a measuring device for measuring the temperature of a surrounding fluid. Background technique [0002] The electronic thermometer comprises a temperature sensor whose physical characteristic parameters change in a characteristic manner depending on the temperature to be measured. The signal measured by the temperature sensor is output at the electrical output of the temperature sensor, said signal being the An indicator of the value of the characteristic parameter. [0003] In order to make the measurement as accurate as possible, the temperature sensor must have as good a thermal contact as possible with the position or medium whose temperature is to be measured. At the same time, the temperature sensor should also be less affected by the surrounding environment. But the thermal interference will pass through Indispensable feed lines are brought to the temperature sensor, since the good conductors of electri...

AI Technical Summary

Problems solved by technology

[0004] The utility model DE 201 01 270 U1 proposes to determine the temperature by infrared measurement in pyrometry in order to alleviate the above problems. But it is very difficult to thermally decouple the sensor from the surrounding environment

Thermometers are becoming disproportionately more expensive as the demands on accuracy continue to increase.

Images