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Resistance Temperature Detectors use resistance to monitor temperature, and as the temperature rises, the resistance value also rises. RTDs are often produced using copper, nickel, or platinum. Base resistance and temperature coefficient of resistance values are included in RTD standards. According to the material used, the base resistance value typically ranges from 10 to many thousands of Ohms, with 100 ohms being the most common. It specifies the nominal resistance of the RTD resistance temperature detector at 0°C for nickel and platinum constructions or 25°C for copper constructions. In this post, you can see the list of RTD resistance temperature detector elements:
Tungsten
The primary property of tungsten is its high resistivity, which makes it perfect for applications involving high temperatures. Tungsten is challenging since it is brittle and challenging to work with shape.
Platinum
Platinum sensor elements have a positive temperature coefficient and are formed of pure platinum wire. Platinum RTD resistance temperature detector elements are exceptionally accurate for industrial applications because of their linearity and long-term stability. Platinum RTD elements are suitable for industrial applications with a wide temperature range that demand stability and linearity and can employ copper wire extension leads.
Balco
Balco, an annealed resistance alloy of 70% nickel and 30% iron, is used to make sensors. At temperatures ranging from -40° to 116° or -40° to 240°, a Balco 500 ohm sensor offers a relative linear resistance. Balco RTD resistance temperature detector sensors are inexpensive and have a high resistance coefficient, outstanding linearity, good mechanical qualities, and moderate corrosion resistance, similar to copper.
Nickel
Due to the resistance per degree of temperature change, nickel elements have a restricted temperature range and become non-linear over 300 °C or 572 °F, which causes temperature processing to be inaccurate and necessitates error adjustments. They are less expensive than platinum RTDs and have better corrosion resistance, but they age quickly and lose accuracy.
Copper
Although copper requires a longer element than platinum because of its low resistivity forces, it has solid linear resistance relative to temperature change. Due to oxidation, copper may only be used in temperatures lower than 150° C or 302° F. The only applications for copper RTDs resistance temperature detector are winding measurements for turbines, generators, and motors. Because of their linearity and affordability, copper elements are used in non-oxidizing environments.
Final words
Hopefully, you will learn about the list of RTD resistance temperature detector elements. These are the numerous parts that make up the RTD sensor elements, and each part carries out a specific function when the RTD starts operating.
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