Help me take a look at this copper temperature sensor

At room temperature, the resistance is around 2200 ohms; this sensor is likely a temperature sensor of the PTC thermistor type. The analysis is as follows: - The resistance values of common platinum resistive temperature sensors (such as Pt100, Pt1000) at room temperature are usually around 100 ohms or 1000 ohms; they do not reach over 2000 ohms. - The resistance value of NTC thermistors is generally between a few thousand and several tens of thousands of ohms at room temperature, but it drops rapidly as the temperature rises. Therefore, at room temperature, the resistance value of an NTC is generally much higher than 1KΩ, usually ranging from several thousand to several tens of thousands of ohms. - PTC thermistors have a low resistance at room temperature, and this resistance increases rapidly as the temperature rises; therefore, it is possible for their initial resistance to be between a few hundred and a few thousand ohms. The value of 2200 ohms that you measured matches these characteristics. Based on the above characteristics, your sensor with a resistance of around 2200 ohms at room temperature is likely to be a PTC-type thermistor temperature sensor. .