i have a 4 wired pt100 and i want to know ho to wire it to arduino uno
and how can i get the temperature
openenergy.org has an example
Hi.
I also have similar problem, so I am not going to start new topic.
I have got Arduino and 4-wired PT100 temperature sensor (like in the attachment picture).
I figured out pinout of wires but didn't find clear diagram how to connect this sensor to Arduino.
I am not sure, but it seems that additional chips are needed.
Any help will be appriciated.
The resistance variation to temperature of a platinum sensor is too small for the Arduino to measure directly.
Assuming you want a reasonable resolution.
You need an interface board for a (4-wire) PT100.
Like this one.
Leo..