Thermocouples / Resistance thermometers

General Information

Thermocouples are combinations of electrically conductive metals that are connected together at one end (preferably by means of welding or brazing). This end serves as the measuring point. Both free ends form the reference junction where a “thermoelectric voltage” is measured depending on temperature difference. This voltage can be analyzed for measuring and control purposes.

Operating Conditions and Safety Instructions

Thermocouples made of iron with copper-nickel (Fe-CuNi) and nickel-chrome with nickel (NiCr-Ni) are widely used for technical applications. The latter is used in particular for higher temperature ranges.

Other thermocouples based on DIN IEC 584-1 and DIN 43710 are available, however, on request. Nonconforming installation and incorrect selection of control equipment may result in defects and accidents. Any other conditions of use or diverting from the intended use must be clarified with the manufacturer who must give his express approval. Otherwise the warranty is void and no liability will be assumed.

Installation Instructions

To ensure accurate readings, the measuring point of the thermocouple must be able to precisely sense the temperature. That's why it is necessary to make sure that the ready-made thermocouples are placed far enough into the medium that is to be measured or as close as possible to it.

To get a good usable signal, the reference junction must be maintained at a temperature that is kept as constant as possible. Therefore, a “compensating circuit” is generally used to maintain a sufficient distance from the measuring point.

The production of these thermocouples and resistance thermometers is certified according to the
DIN-EN ISO 9001:2008 via TÜV Thuringia

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