What is a Platinum Resistance Thermometer? - Circuit Globe
Definition: The platinum thermal resistance (PTR) uses platinum for determining the temperature. It works on the principle that the resistance of platinum changes with the change of temperature. The thermometer measures the temperature over the range of 200°C to1200°C. The platinum is an unreactive metal and can easily be drawn into fine wires.
Resistance thermometer - Wikipedia
Resistance thermometers, also called resistance temperature detectors (RTDs), are sensors used to measure temperature. 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).
Platinum Resistance Thermometer - an overview - ScienceDirect
The platinum-resistance thermometer is a standard type, calibrated from the ultimate but inconvenient temperature reference of a gas expansion thermometer. Platinum sensors can now be obtained in thin-film or thick-film forms of various shapes and sizes, at much lower cost than the older platinum-wire types.
Platinum Resistance Thermometers (PRT) | 福禄克 - Fluke Cal
A platinum resistance thermometer (PRT) is a thermometer constructed from a high purity platinum element (wire-wound coil or thin film) placed in a tube of metal or glass and sealed with an inert atmosphere and/or mineral insulator.
The Platinum Resistance Thermometer - P.I. Process …
2022年9月25日 · The platinum resistance thermometer — also called a PRT or Pt100 — is the most commonly used instrument to measure industrial process temperatures. Accuracy, long term stability and repeatability are the main features responsible for its popularity.
The Standard Platinum Resistance Thermometer, acronym SPRT, is the stipulated interpolation instrument for realizing the International Temperature Scale of 1990 between the defining fixed points, over the range from 13.8 K (the triple point of eka-hydrogen) to …
Platinum Resistance Thermometer- Construction and Working
This thermometer, invented by Callendar in 1877, measures temperature by detecting changes in the resistance of a platinum wire. The equation for this change is: Where θ represents the temperature change, and α and β are constants, with β being much smaller than α.
Platinum Resistance Thermometers (PRT) | Fluke - Fluke …
A platinum resistance thermometer (PRT) is a thermometer constructed from a high purity platinum element (wire-wound coil or thin film) placed in a tube of metal or glass and sealed with an inert atmosphere and/or mineral insulator. Two, three, or four leads are connected to the element and are used to provide for the measurement of the ...
Resistance Thermometer - Guide to Platinum Resistance Thermometers
Resistance thermometers incorporate a resistive sensing element mounted insode a stainless steel probe (with associated cable, connector or termianl head). This element is usually a wire wound or thin film platinum element with a resistance of 100 ohms at 0°C. These sensors are commonly referred to as Pt100 sensors.
Platinum Resistance Thermometers - Marlin Manufacturing
Platinum Resistance Thermometers operate on the principle that the electrical resistance of a metal conductor changes as a function of temperature. PRT’s provide an accurate, stable and repeatable means of absolute temperature measurement.