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An RTD (Resistance Temperature Detector) is a sensor whose resistance changes as its temperature changes. The resistance increases as the temperature of the sensor increases.
What Is a Resistance Temperature Detector (RTD)? An RTD, also sometimes called a resistance temperature device, is a temperature sensor that measures temperature by correlating the electrical resistance of a material — commonly platinum — to temperature changes.
This application note starts with an overview of the RTD, discussing their specifications, construction, and details in their use in temperature measurement. Different circuit topologies with precision ADCs are presented for different RTD configurations.
An RTD (Resistance Temperature Detector) is a temperature sensor that exhibits an increase in resistance when subjected to an increase in temperature. RTDs are highly accurate sensor devices with low drift and excellent long term stability.
An RTD or resistance thermometer stands for resistance temperature detector that is used for measuring the change in temperature by measuring the variation in resistance over the temperature range.
Because a nickel RTD is so sensitive, a low-cost, low-accuracy transmitter can measure the RTD with acceptable accuracy. Nickel RTDs are found in HVAC and other price sensitive applications.
What is an RTD sensor and how do they work? - PR electronics
An RTD (Resistance Temperature Detector) is an electrical temperature sensor that works on the principle that the resistance of a metal increases with temperature.