Coolant Temp sender

[Steve_D]

Does anyone have a source where I can search for a sender with a certain resistance at 100 degree C?

The TVR temp gauge is well known for giving a low reading. I can put a variable resistor on the gauge and measure the resistance needed for, say, 100* so with that figure I'm hoping to find a sensor which gives a better match. I'm not even concerned about thread size as that can be resolved.

Many thanks
Steve

[Steve_D]

Thanks Steve.
I had forgotten about those wizards. Seems the most obvious choice when time=money.

There are probably more versions out there so was that one you know and trust or just the first you found as an example?

I've had a quick look around and people seem happy with it and how well you can match the setup.

Steve

[Steve_D]

Thanks will get one on order in the morning.

Steve

[Steve_D]

Evoluzione said:

Something like this?

http://www.eltekgroup.it/var/public/10082300_WTS%2...

The WTS05 has loads of charts for it too:

http://www.compsystems.com.au/joobi/user/media/ima...

http://livedoor.blogimg.jp/tedesco/imgs/4/e/4e24c0...

Its much the same as I have been finding. None match the 133ohm @ 100 degrees that my gauge needs. Even if it did at 100* I doubt it would be right across a range.
Whilst the wizard is expensive I'm keen to see if it works then perhaps offer it as an option for our customers.

Steve

[Steve_D]

The gauge is normally in a veneered dash with all the instruments matching in style so aftermarket is not really an option.
I'm liking the wizard as it will arrive at a match even if the gauge itself is out of calibration which is always a possibility at 20+ years old.

Steve

[Steve_D]

Max_Torque said:

Really annoys me when you see the prcie of those little circuits, with £3 worth of processor and no automotive rated parts on it (stupid screw connections, no environmental protection, no load dump protection etc) pretty much total crap they charge you lots of money for!!

Yes, but if you don't have the expertise to make it yourself then you have little option.

Steve

[Steve_D]

AER said:

If you only want it correct at a single point (i.e. 100°C) you could put a variable resistor across it (i.e. in parallel with the sensor) and tweak it to measure the correct value, then replace this with a fixed resistor of the same value.

True but you are left wondering what is happening elsewhere in the range.
I want to be in a position to offer a true fix for our TVR customers.

Steve