I'm wanting to set up a test rig for heater blocks with 5x 300W heaters in them. How can I convert the resistance of the heaters into an analogue input so I can test they are within tolerance.

I could just use a thermocouple input to test the temp of the actual block but that would not show the individual elements, plus the H&S issues with hot lumps of metal sat on the bench in the workshop.

Thanks all.

<><

Perfect, thank you.

Steve