The temperature coefficient, also referred to as the “alpha value”, is the average change in resistance between 0 and 100 °C, and calculated using the formula:
Pt Sensors in General
Design and Function
What Is a Pt Sensor? How Is It Constructed and How Does a Pt Sensor Work?
Temperature
Temperature Coefficient and Resistance
How Is the Temperature Coefficient of a Platinum RTD Element Defined?
Where R100 is the resistance at 100 °C and R0 is the resistance at 0 °C.
What Is the Temperature Coefficient? How Can It Be Influenced and Determined?
Pt100 vs. Pt1000 vs. Pt10000
Pt100 vs. Pt1000 vs. Pt10000
What Is the Difference between a Pt100, a Pt1000 and a Pt10000? When Do I Use Which Nominal Resistance?
Connections
Wire Connections
What Is the Difference between a 2-, 3- and a 4-Wire Connection and When Do I Use Which Wiring Type?
Sensor Construction