[harlequin2]

I've just connected the thermistor for Tmot to my board and it reads just on 3 deg high. That is, showing 27 deg C when my fairly accurate thermometer says 23.7. Is this about the best accuracy one can expect? Or is there something that needs trimming somewhere?
Further, I have connected the one for Tbat also and it reads the same 27 deg - as one would hope!

Now here's an interesting thing! The increase in temp is explained by the fact that my desk light is only a metre or so away and the IR it puts out is enough to warm the thermistors by a couple of degrees! If I shade them from the light, they drop back to about the same as my thermometer. Quite amazing.
Anyway, I guess they are more than accurate enough for the purpose.