Had something like an LM35 in mind. Guess it's more or less the same. Don't need super high accuracy here, just a rough temperature indication.
With the correct use of two potmeters (one for offset of the 500mV, the other for 'rescaling' of mV to deg.C) it might even be possible to have direct 'deg. C' readout on a DMM display?!
Hmmm, your IC doesn't even need a rescaling of the output, only an offset of .5V; i.e. connect a potmeter to +3.6V and to gnd; adjust the wiper to .5V, connect ground of DMM to the wiper. Connect the + probe of the DMM to the output of the IC: finished; direct degrees C. readout on a DMM! Will look in the datasheets for the LM35 whether it's a simple with that one too.
But, with long lines from windmill to the readout, it may perhaps be necessary to lower output impedance of the temp. IC.
Hmmm, didn't know Microchip made temp. sensors too. Thought they only made microcontrollers (PICs)
Peter.