Microedge Instruments iLog Series User Manual page 17

You can also use a custom equation to do the same job or even more complicated
calculation. An example of external thermistor equation is included in SiteView package.
When you create your own equation you can refer to this equation and replace those
temperature coefficients with the ones obtained from the thermistor manufacturer. The
contents of the sample equation looks like this:
iLog Data Loggers User's Manual Page 16/63