Making an in line temp sensor for a HERMS

by **ockelford** » Thu Aug 20, 2015 13:15

Just a quick photo, how I put together the temp sensor mounted in my outlet from the heat exchanger.

The pt100 is mounted using silicon sealant in a snug fitting nipple from a dismantled braided hose tap connector. This screws into the end of a 15mm compression tee, with silicon washers made from a 2mm thick sheet I bought on eBay.... I thought it was quite an elegant solution.

also useful mounted in a tank fitting on the hlt...

Sorry if its a bit basic in detail, but it should be pretty self explanatory

by **mark1964** » Thu Aug 20, 2015 14:07

Our sensor screws in to an m8 brass nut which is soldered in to a 15 to 10 mm reducer. The reducer is then soldered on to a 15mm T peice connected to the outflow from the Herm's.

by **ockelford** » Thu Aug 20, 2015 14:23

That's neat, I like that, I however don't solder plumbing, and felt a dismantle able one was easier to clean etc, plus the m8 part of the pt100 doesn't seal onto the sensor stem... Where did you get your pt100?

by **mark1964** » Thu Aug 20, 2015 14:25

Ours is completely removable. Just unscrews. We got both pid and sensor from auber instruments in the states

by **beermaker** » Thu Aug 20, 2015 16:22

That looks really smart Ockelford, and both solutions sound very elegant and professional. Will definitely be bearing them in mind with the new build!

Did you have any bother with customs duty importing from the states Mark? There's loads I want to get from over there but I'm put off after buying a pre-programmed EEPROM from the states for £18 and then got stung at the post office for another £16 import duty!

Cheers
Phil

by **tazuk** » Sun Nov 08, 2015 12:35

cool i like it :clap:

by **cyclops** » Sun Nov 08, 2015 12:54

Got an even better idea that i use at the moment with no need for silicone

Will try and get a photo in a moment

by **ockelford** » Tue Dec 15, 2015 14:16

Hi Cyclops,

Would love to see your idea, mine has held for 4 brews so far, and works great.

Just need more time to brew!

R

by **cyclops** » Tue Dec 15, 2015 18:53

by **cyclops** » Tue Dec 15, 2015 18:54

It's a 15mm compression and the temp sensor screws in the other side

by **Ciderhead** » Tue Dec 15, 2015 18:55

Saw these recently
http://m.ebay.com/itm/251771167964?_mwBanner=1

by **jsebright** » Tue Dec 15, 2015 19:42

Ciderhead wrote:Saw these recently
http://m.ebay.com/itm/251771167964?_mwBanner=1

I've bought two of those (possibly slightly cheaper than that but it was earlier in the year). Use one in a stainless steel T that I flow through* for Herms and one that screws into a fitting in the kettle. I only have one pid device and it's handy to unscrew the lead from one sensor to the other. I can leave the sensor in place without having to worry about the cable when taking things outside for cleaning etc.

* it's too long to fit in the cross piece of the tee so has to go on an end and the wort has to flow round a corner.

by **tazuk** » Wed Jan 06, 2016 15:08

love the idea of these ill order some great idea for hlt and herms :thumb:

by **Springer** » Wed Jan 06, 2016 15:32

mark1964 wrote:Our sensor screws in to an m8 brass nut which is soldered in to a 15 to 10 mm reducer. The reducer is then soldered on to a 15mm T peice connected to the outflow from the Herm's.

Is the brass nut turned down to allow it to fit into the reducer Mark.

S