Ecumaster forum

I like tuo use the stock sensor, what is already connected with the stock gauge.
Over the bandwide 20-100 degrees, i can read 6 - 8 Volt.
The EMU software only allowes 0 - 5V. When i try to switch to 8V, it goes back to 5V max.
The resistance of the EMU input 1 is about 980KOhm. Is it ok, if i just take a resistor of same (test +/-) Ohm in row?
So i would read about 3-4 Volt...
The measurement of the original gauge seems not to be irritated, that works with ca. 250 Ohm.

Is that practicable, or would you recommend another way?

Cheers, Olli

you may want to connect 2 resistors about 1k from the gauge Op in series to ground and connect the EMU to the join between the 2 resistors thus forming a voltage split. you can scale the range by altering the size of one of the resistors etc.

any resistence from sensor to ground will affect the reading ............ i dont recommend it
if ..... i would use much bigger resostros for voltage divider, like 10k and above

It is tested out today.
One part of the voltage splitter is the EMU herself with about 980KOhm, the second resistor what is built in row now, has 500KOhm.
With 18°C i get 4,6V and with 120°C 1,8V.
That works really fine!
Just need to switch the OilCooler fan by EMU.

That does not affect the readings of the stock gauge. Or better: you cannot see a difference.

Thank you for your input!