PTC sensor for oiltemp. gauge

Post this over on rec.aviation.owning to get an answer.

You might try the " components " forum on

This is just the sort of challenge that readers of Elektor Electronics magazine like, and as an added bonus, the magazine is based in your homeland of Holland. Get it sorted, and you can probably get some extra publicity for your group by writing an article for the mag on how you solved your problem ( assuming you do ... )

Arfa

On 17 Feb 2006 07:09:29 -0800, "Seagull149" put finger to keyboard and composed:

I notice that the characteristic is mostly linear, excepting for possible typos at the lowest two temps. Maybe you could adapt an IC temperature sensor and use its output to drive a current sink. Or you could take the output of *any* resistive temp sensor and use a PIC micro to translate the resistance values via a lookup table. The PIC's output could then drive a cheap 8-bit IC DAC or an R-2R DAC, which would in turn drive a current sink for the gauge.

- Franc Zabkar

HI, could it be an ordinary 100 Ohm PRT, 100 Ohms at 0 Deg.C and 138 Ohms at

In message , Franc Zabkar writes

On Sat, 25 Feb 2006 21:00:30 +0000, "Neil J. Harris" put finger to keyboard and composed:

Looks plausible, depending on the accuracy of the OP's measurements:

- Franc Zabkar