RTD Temperature & Resistance Calculator

RTD stands for Resistance Temperature Detector, which is a type of temperature sensor used to measure temperature in various industrial applications. RTDs are commonly used in industries such as oil and gas, chemical processing, and power generation, where precise temperature measurements are essential for maintaining safe and efficient operations.

An RTD works on the principle of electrical resistance. It consists of a length of wire made of a pure metal or alloy that changes its resistance as the temperature changes. The most commonly used materials for RTDs are platinum, nickel, and copper. Platinum is the most widely used material due to its excellent stability, accuracy, and linearity.

The resistance of an RTD increases with temperature, following a predictable linear relationship. This relationship is expressed by the Callendar-Van Dusen equation, which is a standard equation used to calculate the temperature from the measured resistance of an RTD. The equation takes into account the temperature coefficient of resistance, which is the rate of change of resistance per degree of temperature change. RTDs are highly accurate and have excellent stability over a wide temperature range. They are also very reliable and have a long service life, making them ideal for use in harsh industrial environments. RTDs can measure temperatures ranging from -200°C to over 1000°C, depending on the material and construction of the sensor.

RTDs are available in a variety of shapes and sizes to suit different applications. The most common types are wire-wound, thin-film, and coiled-element RTDs. Wire-wound RTDs consist of a length of wire wound around a ceramic or glass core, while thin-film RTDs use a thin layer of metal deposited on a ceramic substrate. Coiled-element RTDs consist of a length of wire wound in a spiral around a ceramic or glass core, which provides a greater surface area for heat transfer. RTDs are used in a variety of industrial applications, including temperature measurement and control in industrial processes, environmental monitoring, and laboratory research. They are often used in conjunction with temperature controllers, which regulate the temperature of a process by adjusting a heating or cooling system in response to changes in the measured temperature.

In summary, RTDs are highly accurate, reliable, and stable temperature sensors used in a wide range of industrial applications. They work on the principle of electrical resistance and change their resistance in a predictable linear relationship with temperature. RTDs are available in different shapes and sizes to suit different applications, and they are often used in conjunction with temperature controllers to regulate the temperature of a process.

This calculator Supports various types of RTD's PT10, PT50, PT100, PT500 & PT1000. All the calculations depends on various standards such as American Scientific Apparatus Makers Association (SAMA)(RC21-4-1966), British Standards Association(B.S. 1904-1964), FachnormenausschuB Elektrotchnek im Deutschen NormenausschuB(DIN 43760), International ELectrotechnical commission(Supersedes BS & DIN) (IEC 751: 1983), US Department (MIL-T-24388)

Note:Default RTD model PT100 and Default Alpha coefficient value α=0.00385 is selected. However you can change according to your requirements.