Works with a sensor and joule effect.

Hello world !
(sorry for my bad english...)

I want to know a little detail about temperature sensor and an eletronic principle...

I have to acquire a temperature with a sensor but, if i use the tension i will have a problem. My links are very long (5m) and i will have some losses of tension.

But, can i work with the intensity (in mA) and not the tension to acquire the temporature ? I'm a newbie... Every temperature sensors can be used to do this ?

The DS18B20 digital temperature sensor may be what you are looking for. The temperature data is sent in digital form so longer wires are not a problem. There is a great deal of application information on the forum and the internet.