PTC thermal resistance of the temperature sensors and pt100 resistance is the same?

Both belong to the heat resistance, resistance changes with the change of temperature. But the function and purpose are not the same.

PTC is Positive Temperature Coefficient, namely the Positive Temperature Coefficient, is a type of thermistor, it refers to the resistance value will be as the category of thermistor Temperature rises. This type of thermistor has wide application in protection circuit. As in protection circuit with a PTC thermistor, when the temperature of the thermistor temperature surrounding temperature to a certain point, the thermistor resistance become large, thereby blocking circuits, when the temperature drops will automatically restore are asleep, to protect the whole circuit is not damaged.

the PT100 resistance, PT is metal platinum symbol, 100 refers to PT100 at 0 degrees of resistance of 100 ohms. PT100 type belongs to a resistance temperature sensor, it is the use of platinum resistance rule changes with the temperature change. It is commonly used temperature range for - From 200 to 650 degrees. This kind of sensor which is equipped with temperature controller, but it will only operation temperature changes, no control action.

in the temperature measurement, first of all, there must be a able to feel the temperature of the device, the temperature sensor. PTC and PT100 can be used as temperature sensor. And temperature control, the first thing to know is to control the temperature, to control, namely the temperature control based on temperature measurement. PTC and PT100 measurements, can be as a control.