I'm guessing I'd need an amplifier to accomplish this, right? I was hoping to be able to use a liquid level sensor (multiple reed switches in a tube with a floating magnet) as an analog position indicator. Using a 1.2K resistor in series with the sender, I can get 20mA maximum current, but the minimum current is >16mA. A 4mA span isn't going to cut it.
Can anyone recommend an easy solution. I don't want to spend too much on a proof-of-concept.
Can anyone recommend an easy solution. I don't want to spend too much on a proof-of-concept.
