Default PCS datalogger

I am trying to use channel 7 as my fuel level indicator and channel 8 to read the transmission temperature on my PCS datalogger. I did check the enable pull up resistor box. I programmed the temperature table in the channel but was not able to change the voltage to ohms. How do i change the voltage table into ohms?
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Dart 347,78GTS turbo,TH400,FAST XFI,3.27, E85.