Not clear which one you are referring to (2nd value). I do not have the NTC sensor. The 6 and 70 ohm values I got by placing resistors in the place of the sensor and seeing where the meter red... "cold" and "hot" are simply where the pointer pointed... and these (it seemed to me) are what the meter wanted to see. I ran these values twice (I had mislaid the paper where the first number were written.)
As for the numbers for PTC I got these from the sensor on the car... ran values from freezing (in freezer) to boiling (stove/water)... 45 was at 210 degrees, 793 was at 72 room temp, 4.6k was at freezing.
Now to figure out what you were calc.
---------- Post added at 20:42 ---------- Previous post was at 20:25 ----------
w/ simulated NTC thermistor(?):
6.6 ohms * 189 mA is aprox 1.24 v
68 ohms * 96 mA is aprox 6.3 v
so ohms law agrees with my measurements (all 6 numbers were measured).
The meter is the bimatal/nichrome wire type. Maybe that explains the anom.
---------- Post added at 20:49 ---------- Previous post was at 20:42 ----------
hummm... .01 ohm and -2.38 ohm. I see your point. We are doing this stuff like the V are DC, and they are not. Problem coming in from there?