Reading Temperature from Pressure/Temp Sensor

Other Hardware Sensors
1

Hi everyone, I am going to be using the following sensor in an upcoming project:

M12 X 1.5 Coolant Pressure & Temperature Combo 100 PSI / 500*F PN: 899 (lowdoller-motorsports.com)

The usage of the pressure sensor seems simple enough, hook it up to an analog input, and adjust the scaling as it was outlined. I am confused at how the temperature sensor works though, given that it varies resistance with the temperature rather than voltage. Does anyone have any direction for how to use this specific sensor? Additionally, I see that both the black and white wires are "negative sensor ground," why would the sensor have two separate ground wires? If anyone has some resources/directions on how to read the data into the Arduino, let me know!

2

The temperature sensor appears to be a PT100 sensor, which normally requires a PT100 amplifier for interface to Arduino, like this one.

It is completely separate from the pressure sensor, which is an active IC, evidently with its own ground lead.

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