Does anyone have any suggestions for making a digital temperature probe that's not food grade or acid-resistant safe to use for brewing?
I've built a mash temperature controller using an Arduino board, a digital temperature probe, and an electrically actuated gas valve. I program the Arduino board with my mash schedule, and it turns my natural gas source on/off as necessary to maintain my temps within a degree. My concern is that the probe will disintegrate in an acidic environment. I'd like to shield it from the acid somehow. I'm curious if anyone's done that...