1/2 inch NPT thermometer

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Go to ebay and search for "bimetal thermometer" and look for the ones with a 1/2" threaded connector. I bought two new, surplus industrial thermometers a while back for $40 shipped. They sell for $250 each new.
 
Thanks...I should have been more specific. I can find 1/2" npt thermometers, I'm actually looking for specific recommendations on brands to trust or avoid...
 
Any of the industrial brands thermometers will last a lifetime. Just make sure it has an adjustment screw for calibration purposes.
 
Arkador said:
these are $40 or less...

http://www.williamsbrewing.com/BREWMOMETER_MASHING_THERMOMET_P1399.cfm
http://www.williamsbrewing.com/BREWMOMETER_WELDLESS_THERMOME_P1400.cfm
http://www.austinhomebrew.com/product_info.php?cPath=178_67_65&products_id=2347
Click to expand...

Unfortunately, those are not adjustable. You can get an adjustable 5" dial face for $38 on ebay.

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when you say adjustable, do you mean being able to adjust the calibration if/when it gets out of whack? that seems critical for a bimetal thermometer.

side question: what length probe is recommended for a keggle? 3-4 inch? or does it matter?
 
BuzzCraft said:
when you say adjustable, do you mean being able to adjust the calibration if/when it gets out of whack? that seems critical for a bimetal thermometer.
Click to expand...

Adjustable angle and temperature calibration.

BuzzCraft said:
side question: what length probe is recommended for a keggle? 3-4 inch? or does it matter?
Click to expand...

You want the probe to have a 1" - 2" reach inside the kettle to get an accurate temperature reading. The length of the probe depends on whether you install a tee for a sight gauge, etc. I use a tee and a 6" probe gives me ~2 inches of reach.
 
I have 3 brand new Ertco universal angle 1/2" MNPT ones with the 2.5" stem that are retail over 160 bucks each. One is 0 - 250 F, the other two are 0 - 200 F. They also have Celsius scales on them. I have no need for them, I'll sell the lot for 140 shipped. These are easily some of the best ones on the market. PM me if interested.

http://www.fishersci.com/wps/portal/PRODUCTDETAIL?prodcutdetail='prod'&productId=672417&catalogId=29101&matchedCatNo=15060131||15060138||15060156||15060119||15060120||15060134||15060139||15060146||15060140||15060155||15060147||15060135||15060122||15060126||15060144||15060183||15060128||15060143||15060152||15060130||15060132||15060154&pos=8&catCode=SE_SC&endecaSearchQuery=%23store%3DScience+Education%23N%3D0%23rpp%3D15&fromCat=yes&keepSessionSearchOutPut=true&fromSearch=Y&searchKey=Ertco&highlightProductsItemsFlag=Y
 
Bobby_M said:
Why do you need 6" probes? Just curious. I hate my 6" probe in the boil kettle cuz it gets in the way of the IC.
Click to expand...

Exactly. Why would it need to stick in more than an inch or two?

(Um...I'd rephrase that if I could think of a better way to put it.)

Anyway we're looking at thermocouples because the one we have now works for pretty much....no one. 1/4" NPT with 2" immersion depth seems to be the winner for most. Why 1/2 vs. 1/4? Is it just because of a convenient size to put a hole in the kettle?
 
OhioBrewingTechnologies said:
Exactly. Why would it need to stick in more than an inch or two?

(Um...I'd rephrase that if I could think of a better way to put it.)

Anyway we're looking at thermocouples because the one we have now works for pretty much....no one. 1/4" NPT with 2" immersion depth seems to be the winner for most. Why 1/2 vs. 1/4? Is it just because of a convenient size to put a hole in the kettle?
Click to expand...

guessing you didn't see my post above yours.
 
chefchris said:
guessing you didn't see my post above yours.
Click to expand...

Well how long does it need to be to reach through the tee? Not everyone uses a sight glass. Having too long of a probe means it either interferes with the IC on the inside (Yes I saw that stated above) or gets knocked by someone's arm on the outside.

Having too short of one means you can't use it in your configuration. We are just looking for the best compromise. So far it's 2" immersion depth. That still gets through the Tee, right?
 
OhioBrewingTechnologies said:
Well how long does it need to be to reach through the tee? Not everyone uses a sight glass. Having too long of a probe means it either interferes with the IC on the inside (Yes I saw that stated above) or gets knocked by someone's arm on the outside.

Having too short of one means you can't use it in your configuration. We are just looking for the best compromise. So far it's 2" immersion depth. That still gets through the Tee, right?
Click to expand...

there's a thread on here where a guy bought the same sight glass I did and said he was using the 6" probe so 2" ended up in the pot.

I don't have them in yet so I'm unsure of their size, but I'm fairly sure a 2" probe isn't going to cut it.
 
chefchris said:
thanks for speaking up! excited to get my order. do you have any recommendations for a thermometer for this site glass?

also, will the fitting leak if there's no thermometer installed?
Click to expand...

I think the ebay link earlier is a good price for a decent thermometer that can be calibrated. You do have to specify your probe size on their auctions.

http://myworld.ebay.com/howegauges/

I've spoke through email with them and they seem like nice people. Decent prices.

If you do not install a thermometer you will need to put a plug in the hole. You can get a brass plug at home depot or lowes.
 

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