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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Last Question about thermocouples, I swear!
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Old 01-05-2010, 05:07 PM   #1
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Default Last Question about thermocouples, I swear!

So, will this probe from brewershardware.com:


Work with this love controller?:

Thanks and sorry for the many temp probe q's!

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Old 01-05-2010, 05:17 PM   #2
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The drop down specifies TS series controllers and the 16A is not a TS series so, I wager a guess that it won't. Maybe call Dwyer and check.

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Old 01-06-2010, 11:22 AM   #3
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nope, it won't work. the probe you want to use is a thermistor, but the love controller you want to use has thermocouple or rtd sensor input only (it also has process voltage/current input but that's irrelevant for this application..)

thermistors and rtd's are both variable resistors that respond to heat, but the response and resistance curves are completely different. generally speaking, a thermistor is more precise but an rtd has a wider operating range.

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Old 01-06-2010, 05:12 PM   #4
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Great, so basically I need a thermocouple and a thermowell to monitor my fermentation temps... so what would the best combo be? Thanks...

EDIT: Ok, so will this Type-k Thermocouple work?

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Old 01-07-2010, 10:03 AM   #5
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Quote:
Originally Posted by Brewing Clamper View Post
Great, so basically I need a thermocouple and a thermowell to monitor my fermentation temps... so what would the best combo be? Thanks...

EDIT: Ok, so will this Type-k Thermocouple work?
electrically, that thermocouple will work, but if you're planning to submerge it in liquid, that would be a bad idea... it's not waterproof, and is designed to screw into the material being heated (for example, a hot stamping machine's solid aluminum platen heated with electrical cartridge heaters)

you could screw it into a block of aluminum and put that in your fermentation chamber, the readings should be pretty accurate once the temperature stabilizes.

a k thermocouple is probably the best choice as far as accuracy and cost go. a j thermocouple will also work as long as you're not going below freezing temps.. with all thermocouples, if you need to extend the leads you must use compatible thermocouple wire, ordinary copper wire will introduce error into the system....
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Old 01-07-2010, 01:17 PM   #6
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Are you set on either of the two products you mentioned?

This controller uses the thermistor you listed. (But, it includes a thermistor probe.)

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Old 01-12-2010, 04:07 PM   #7
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Quote:
Originally Posted by marzsit View Post
electrically, that thermocouple will work, but if you're planning to submerge it in liquid, that would be a bad idea... it's not waterproof, and is designed to screw into the material being heated (for example, a hot stamping machine's solid aluminum platen heated with electrical cartridge heaters)...
If I use this K type I would not submerge it, I would use it with a thermowell that would go into the fermenter.

Beerific: I do already own the Series 16A controller so I'm not looking to buy a different one, just a probe that will work with mine for my application. Thanks guys...
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Old 01-20-2010, 05:23 PM   #8
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I'm thinking of switching over to using an RTD sensor instead of thermocouples. At the temperature range in which we use them they have a 2.7* F accuracy. So I could be fermenting at 70 when I wanted upper 60's etc. Maybe not a huge deal, but in my MLT I want to be within 1 degree of my mash temp.

http://digital.ni.com/public.nsf/all...25727B00034E20

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Old 01-21-2010, 03:27 AM   #9
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Good info
http://www.picotech.com/applications/temperature.html


Cheers,
ClaudiusB

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