• Unitech Instrumentation

Resistance Temperature Detectors

Unitech Instrumentation offer Resistance Temperature Detectors. Resistance temperature detectors (RTD) are temperature sensors, which work on principles for resistance offered by metallic element and its variation based on temperature. Metals which provide predictable, stable and linear resistance gradient are generally used for this purpose. Many metals exhibit these properties of which copper, Platinum, Silver and Gold are commonly used.

• Copper is used for cryogenic and sub-zero applications. Commonly available element is Cu53 : 53 Ohm resistance at Zero Deg Temperature
• Where as Platinum is used for most industrial applications. Commonly available elements are Pt50, Pt100, Pt200, Pt500 and Pt 1000
• Pt100: 100 Ohm resistance @ 0 Deg C is by far the most popular and easily available element
• RTD elements are classified in various categories based on its accuracy such as: Class - A, Class - B, Band1 to Band 5