Quote Originally Posted by Kirk Keyes View Post
Since you like playing with electronics, you should just make yourself a temp probe. You've discovered the "secret" of the ATC probe that it's simply a resistance sensor - look around for a 10K thermistor as I think that's what's used in ATC probes. You may need an additional adjustable resistor to adjust the base reading of the termistor. <...deleted details...>
I had not thought of that! Perhaps because I'm not familiar with thermistors. It appears that Beckman meters want a 30K thermistor, probably like this one:

Beckman sells new temperature probes for US$109, but it's tempting to DIY as you described. Thanks for posting the info.