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Based on resistance measurement principle.Material is platinum and resistance value is 100 ohm at temperature 0 °C.Platinum has a positive resistance temperature factor resistance increases with rising temperature.Resistance variation is a function of temperature; 0,39 ohm/1 °C.
Long term stability is the main difference compared to other temperature measuring methods; one year value is better than 0,2 ohm/0 °C.
PT 100 RTD (Resistance Temperature Detector) stands for Platinum 100 means 100 ohms at 0°C.they are used for accurate measurements as they ve linear temp. and resist. relationship.
A thermocouple produces a temperature-dependent voltage as a result of the thermoelectric effect (hot and cold junctions of the thermocouples generates a small voltage signal) , and this voltage can be interpreted to measure temperature.
A Pt100 is a Platinum RTD (Resistance Temperature Detector) with a resistance of 100 ohms at 0°C which changes with temperature. They are suitable for applications in the temperature range of -200°C to 600°C. These temperature sensors are reliable and can offer a higher degree of accuracy.
Thermocouples are made with two dissimilar metals or conductors where a temperature difference between the hot and cold junctions (join) of the thermocouple generates a small voltage signal which changes with temperature. They are best suited to elevated temperatures up to 1700°C or very low temperatures down to -200°C.
Both are the temperature sensors.
Thermocouples are used to measure high temperature up to 2600 degree C. Meausuring unit for themocouple is mvolt.It is lower sensitive than Pt100.Thermocoule is a bimetalic sensor.
Pt100 is used to measure lower temperature than thermocouple up to 850 degree C. Meausuring unit for Pt100 is ohm. It is higher sensitive than thermocoupe.Pt100 is made by single material (platinum).
RTD is a temperature Measuring device,PT100 is Platinum metal which has an accurate relationship between resistance and temperature,provide indication of Temperature in the application used for.
Character of PT100:Platinum is the best metal for RTDs due to its very linear resistance–temperature relationship, highly repeatable over a wide temperature range. The unique properties of platinum make it the material of choice for temperature standards over the range of −272.5 °C to 961.78 °C.
other metals are Nickel, copper and Tungsten with their own temperature attitudes.
Thermocouple is an electrical device consisting of two dissimilar conductors forming electrical junctions at differing temperatures. A thermocouple produces a temperature-dependent voltage as a result of the thermoelectric effect, and this voltage can be interpreted to measure temperature. Thermocouples are a widely used type of temperature sensor.
Both are temperature measurement device
PT 100 RTD (Resistance Temperature Detector) stands for Platinum 100 means 100 ohms at 0°C.they are used for accurate measurements of temperature . A thermocouple consists of two wires of dissimilar metals joined together at one end, called the measurement (“hot”) junction. The other end, where the wires are not joined, is connected to the signal conditioning circuitry traces, typically made of copper. This junction between the thermocouple metals and the copper traces is called the reference (“cold”) junction.
PT100 is the most common sensor used for RTD (resistance temperature detectors). "PT" represent Platinum and "100" is for resistance in Ohms at 0°C. They work on principle that as the temerature increases resistance increased. These are commonly used for temerature range of -200 to C 500°C.
Thermocouple on other hand complise of two dissimilar metals forming a junction. As the temperature of the junction changes, Voltage is genrated. This voltage is used to caluculate the temperature. The most common type of thermocouple is "K" type (Chromel - Alumel), its range is -200 to 1350°C.
PT100 it's a resistance temperature detector it's sensors that it's resistance changes with temperature and thermocouples is 2 different substance exposed to different temperature it generates mv so RTD gives change in resistance with temperature change and thermocouples give millivolts when temperatures change .PT100 is a famous kind of RTD platinum and it's resistance @ 0 'C
used to measue\\re the temparature in industrys
they are used for accurate measurements as they ve linear temp. and resist. relationship or resistance temperature tetector it means 100 ohms at 0 c .
PT100 is one kind of RTD temperature sensor (Resistance dependent ), its resistance is 100 Ohms at 0 temperature degree .
Thermo couple is voltage dependent temperature sensor, its induce millivolt depending on sensing temperature
The thermocouple is used in the application which required a wide range of temperature sensing.
PT100 has a type of PT100 climate which is very sensitive (0.01 temperature degree)
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