EasyTherm (2006-01-10 19:55:01)

Easytherm is a tool that helps making curves from a few calibration points for an NTC temperature sensor.

To make the process easier, we

The coolant and manifold air temperature sensors are (in 99.9% of cases) NTC type. The ExhaustGasTemp sensor can never be an NTC type.

Easytherm files are located in the files section of the Megasquirt group at http://groups.yahoo.com/ or directly from [msefi.com]

Steps:


PROPERTHERM Developer TODO - to make some of the above few simple steps automagic:

Marcell started to write propertherm, a utility to make calibration tables. Main functions:

We that fitting a 2nd order polynom (parabola) to 3 measured points over the whole temp-range (IIRC this is what easytherm does, I read it a long time ago, but I couldn't download to check) gives very poor fitting to the NTC curve.

The proper way is:

developers: /svn/firmware/utilities/propertherm/