Pete12345 wrote:
Strange they act like a variable resistor if they have electronics inside ?
That was my thought. I would assume they would need some sort of voltage there to make them work and I suspect the voltage from my Philips bench multimeter wouldn't be enough.
Well they are fitted, the calibration blocks have been put in and the readings from them are only 2 or 3 bits different to what was stored with the original sensors. The heatshields had fallen to pieces and the remains fell off years ago, so after Clive's warning, made a couple up from thin sheet alloy.