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Using RTD elements can be a smart way to check the temperature in a manufacturing setting. A thermocouple used to be the standard in the industrial world, but accuracy was a problem. The important aspect of an RTD element is the unique way in which it ensures accurate temperature readings. The electrical current that the metal RTD element receives is directly correlated to the theory which says the resistance of metal changes with temperature. Through this method, it is able to get an authentic temperature read in any environment.
RTD elements are commonly made from copper, nickel or Balco, and can be used in many industrial settings where electrical noise is high. It performs well around generators and other equipment that run at a high voltage. They are generally used where there may be little space because of their small size. As fragile pieces of equipment RTD elements are often encased in a protective probe. The wires are left to sit freely within the casing so the wire can expand and contract without disturbance.
The standard RTD element is made of a small piece of wire wrapped around a core of glass or ceramic. This was created to handle temperatures ranging from -200 degrees Celsius to 600 degrees Celsius. An RTD surface element is designed to take the temperature of flat surfaces by being especially thin in size. Other modifications include Thin Film elements, designed only to work with temperatures up to 300 degrees Celsius. If cold temperatures that border on extreme are a problem, carbon resistors elements are a type of RTD elements that work better in freezing temperatures.
Because of the expansive varieties available, RTD elements and the subsequent variations can be used in a wide range of temperatures. You can count on them to be accurate, fast in their temperature recording, and stable in an environment that is otherwise. Not to mention, their low cost and small size. RTD elements are an obvious choice for anyone in an industrial setting.
Resistance temperature detector (RTD) elements are devices that measure temperature by associating the resistance of RTD elements with temperature. The most commonly used material for RTD elements is platinum. Other commonly used materials are nickel, copper, balco, and tungsten. Apart from being among the most accurate temperature sensors, RTDs also showcase outstanding stability and reliability.
Whatever type of application you are going to use RTD elements for, there are specific things you need to consider. Determine which instrument is going to work with the sensor and make sure the instrument's sensor input is compatible with the sensor type.
Decide on the accuracy you want for the measurement. Accuracy depends on base resistance tolerance and the temperature coefficient of resistance tolerance. Another thing to consider is leadwire effects. Measuring temperature through an RTD is about quantifying resistance, which is measured by unstable Wheatstone bridges. An accurate reading will be reached once all external factors are reduced or offset.
Major measurement errors occur in two-lead arrangements. In this connection, the resistance and the sensing element are ordered in series; thus, the reading is the total of the resistances of the sensing element and the leadwires. The three-lead connection is the most recommended. For more information on RTD elements, visit the links on this Business.com page.