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Many RTD elements consist of a length of fine wire wrapped around a heat-resistant ceramic or glass core but other constructions are also used. The RTD wire is a pure material, typically platinum (Pt), nickel (Ni), or copper (Cu). The material has an accurate resistance/temperature relationship which is used to provide an indication of temperature.
The Callendar–Van Dusen equation is an equation that describes the relationship between resistance (R) and temperature (T) of platinum resistance thermometers (RTD). As commonly used for commercial applications of RTD thermometers, the relationship between resistance and temperature is given by the following equations.
IEC 60751 Industrial platinum resistance thermometers and platinum temperature sensors; IEC 60754 Test on gases evolved during combustion of materials from cables; IEC TR 60755 General requirements for residual current operated protective devices; IEC 60756 Non-broadcast video tape recorders – Time base stability; IEC 60757 Code for ...
Balco is a nickel-iron alloy with a thermal conductivity similar to nickel but twice the resistivity.It is used for making low cost resistance temperature sensors. It consists of 70% nickel and 30% iron.
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List of studio albums, with selected details, chart positions, and certifications Title ... PROMUSICAE: 3× Platinum [100] SNEP: Diamond [34] Carte Blanche [101]
Each day of this plan provides an average of 100 grams of protein. You’ll find protein from a variety of sources, including poultry, fish, meat, legumes, dairy, nuts and whole grains.
There are often small differences between measurements calibrated per ITS-90 and thermodynamic temperature.For instance, precise measurements show that the boiling point of VSMOW water under one standard atmosphere of pressure is actually 373.1339 K (99.9839 °C) when adhering strictly to the two-point definition of thermodynamic temperature.