What is an rtd?

An RTD, or resistance temperature detector, is a sensor used to measure temperature by sensing changes in electrical resistance. RTDs are commonly made of platinum, nickel, or copper and have a high degree of accuracy and repeatability. They are used in a wide range of industries, including automotive, aerospace, and industrial manufacturing, due to their reliability and stability over a wide temperature range.

RTDs work on the principle that the electrical resistance of a metal increases with temperature. By measuring the change in resistance, the RTD can accurately determine the temperature of the system it is monitoring. RTDs are often used in conjunction with a bridge circuit or other measuring device to convert the resistance change into a temperature reading.

One of the main advantages of RTDs is their high accuracy and stability over time. They are also less affected by vibration or mechanical shock compared to other types of temperature sensors. However, RTDs can be more expensive than other types of temperature sensors and may require a more complex measuring system to accurately read the resistance changes.

Overall, RTDs are a reliable and accurate choice for temperature measurement in a variety of applications where precise temperature control is important.