Resistance thermometers

Resistance thermometers with Pt100/Pt1000 resistance

Resistance thermometers are equipped with platinum sensor elements which change their electrical resistance as a function of temperature. In our range of products you will find resistance thermometers with connected cable as well as versions with connection head. A temperature transmitter can be installed directly in the connection head. Resistance thermometers are suitable for applications between -200 ... +600 °C (dependent on instrument model, sensor element, accuracy class and materials coming into contact with the medium). Accuracy classes AA, A and B apply to all resistance thermometers. They are available with a tolerance value to IEC 60751.

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FAQ

What minimum insertion lengths are recommended, as a rough guide, for multipart thermowells (from tubing) in order to minimise the heat dissipation error?

for gaseous media: 15 ... 20 x thermowell tip diameter
for liquid media: 5 ... 10 x thermowell tip diameter
for solid media: 3 ... 5 x thermowell tip diameter
(these standard values are only valid for static mediaThe gap between the thermowell and me ... More

What effect does poor insulation resistance have?

In accordance with DIN EN 60751 section 6.3.1 the insulation resistance between each measuring circuit and the sheath, at a minimum test voltage of 100 V DC, must not be less than 100 MOhm. Should the insulation resistance be too low, a measuring error occurs that ... More

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