Is this a suitable probe?

[hairybiker]

I am looking to put some temp probes into my boiler & MT, I am thinking about these (http://www.ebay.co.uk/itm/350669333694)

I assume (right or wrong) that they include the thermowell?

 

[evanvine]

What ever do you want to put a probe into a boiler for? :wha:

 

[hairybiker]

I use it for heating my strike water as well as boiling, it has a higher power element than my HLT. So it gets connected to my STC1000 for temp control.

 

[fifebrewer]

These are the probes I use and have had no problems with them. you might want to give some thought as to how you will put them in you boiler/HLT as the probes is not waterproof and liquid will slowly leak out of the spring bit.

This is how I use mine in my HERMS setup

the construction is probe, 8mm to 15mm compression fitting then 15mm pipe. if you putting it in to you boiler you would then use a 15mm tank connector. I also filled the inside of the reducer with food grade silicon.

hope that helps :

 

[hairybiker]

Thanks for that , so you say that the probe isn't water proof, is the end not sealed? I am workng on the theory of a silicon washer on the inside of the hole and the nut on the o/s. Don't want water/wort all over the floor.

 

[Fil]

thats a type K thermocouple, accurate to +/- 1C with a compatible device iirc, i dont know if it will work with a stc1000 i think they use a different type of probe i think its NTC??

ive used similar pt100 probes and they were not sealed and leaked when attached with a locknut thru the pot wall. Also the metal with the 'connecting thread' isnt SS and will rust if left in contact with liquid.. So a thermowell or pocket may also be expedient. you can make one from recucing sizes if copper tube down to 10 or 8mm from 15mm and a standard tank connector..

 

[rpt]

I don't think that's suitable for an STC-1000 either. I think you need a PID.

 

[fifebrewer]

yes I use mine with a PID controller.

Where the body of the prob mets the screw thread there is a gap that liquid will leak from.