Temperature - What is Sensor Matching?

Sensor Matching

Although all RTD sensors follow an overall standard resistance curve (IEC 60751); each sensor, because of the manufacturing process or slight variations in material makeup, has a unique resistance output curve. The difference between the ‘ideal’ standard curve and the sensor’s 'real' curve will cause errors in measurement. For applications with a high accuracy requirement, temperature sensor manufacturers can supply sensor-specific information to define the Real RTD Curve. Sensor matching is an optional function available on the YTA610/YTA710 for RTD sensor that can use the sensor manufacturer’s sensor-specific information (known as Callendar-Van Dusen coefficients) to increase the accuracy of the measurement.