Just an update 8 years later. Dropped on of them right into the mash while stirring this week. Tried to grab with bares hands OUCH. Put a rubber glove on fast, grabbed it. Still working! These things are great.I'm a little late to contribute here but I've bought one from the company that makes thermopen:
Professional Thermometers from the Temperature Experts | ThermoWorks
I didn't go with the pen because I wanted one like the cheap-o kitchen ones that I could toss a prob in. So my brewing friend and I each got:
It's the MTC model
and then we each got the long waterproof probe with it:
Wire Type K Probes | ThermoWorks
It's the Model: 113-372/373/375-T
It's almost a little too long but I didn't want to end up too short. Not much difference in price for the long one anyways.
I called them up to ask about if this works for me in a mash tun. I asked my sales person if this was the correct thing to order for an all grain brewer with grain, 170 degree, sit in water, etc. I heard her ask the head sales guy and I could over heard him say "Yep, that is the combo the brewers use who put it into their big grain tub, no problem". The probe can be used to test the temp in a dish washer and the hand held part is mostly water proof. We've made 30 batches of beer over the last year with it, rain or shine, no problems and the battery is still fine. I suspect the handheld part into boiling water it wouldn't turn out so well but I've certainly gotten it wet. I would highly recommend it.
I got sick of using the $15 kitchen ones from walmart to have them die or be off by 10 degrees after 2 batches. This is money well spent IMO. Hopefully this helps somebody else.
That's awesome. I have the Therma-Waterproof with a really long handled probe (12"?) and another Wire probe made for testing commercial dishwashers. That one is what I leave in the mash, it's proven to be a great tool.Just an update 8 years later. Dropped on of them right into the mash while stirring this week. Tried to grab with bares hands OUCH. Put a rubber glove on fast, grabbed it. Still working! These things are great.