Today resistance thermometers are one of the important precision and operating measurement instruments of technical temperature measurement. Fast and easy testing of display, control and recording devices in measurement and process engineering is essential. Fixed temperature values can easily be simulated according to the characteristic curves of Pt100, Pt500 and Pt1000 using the precision resistors calibrated in °C (the inscription also includes the resistance value in Ω).
The small dimensions of the resistors allow the installation in measuring instruments or measuring circuits for comparison or control measurements.
Consideration of the ambient temperature is not necessary and the temperature coefficient of < 10 ppm of the used material MANGANIN® is negligible.
The precision resistors of the models 1144 and 1146 consist of low-capacity and low-inductance wire coils made of MANGANIN®, which are cast in small plastic cylinder housings.
Prior to comparison, the resistance bodies are exposed to a meticulous artificial aging procedure. This special method and comparison at approximately only half of the nominal tolerance guarantee long-term stability of < 0.02 % over the course of years.