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Author: Subject: H-B DURAC Thermometers
Oncorhynchus
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[*] posted on 22-9-2022 at 04:56
H-B DURAC Thermometers

Does anyone have any experience with these thermometers?

https://www.amazon.com/Liquid-Thermometer-Immersion-Organic-...

Also, is a 25mm immersion enough for a 14/20 distillation setup?
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Organikum
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thumbup.gif posted on 22-9-2022 at 07:18
TM902C

Your link did not work for me, but anyways, this one:

https://de.aliexpress.com/item/32731425958

sseems to be the gold standard regarding thermometers.
Take a old pipette or other glass-tube, cut to length, seal it on one end and voila'! instant thermometer well.

Those do not switch off after some time whats good and the 9V battery lasts for months on end when permanently on.

Although I have a strong feeling the old ones of this type were superior, they still do.



Irgendwas is ja immer
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Oncorhynchus
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[*] posted on 28-9-2022 at 05:05


Currently looking at getting a thermocouple, but how does one seal the joint with the homemade thermocouple well? Teflon tape?
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[*] posted on 28-9-2022 at 21:05


Quote: Originally posted by Oncorhynchus  
Does anyone have any experience with these thermometers?

https://www.amazon.com/Liquid-Thermometer-Immersion-Organic-...

Also, is a 25mm immersion enough for a 14/20 distillation setup?
Thats mighty pricey for a glass thermometer. I’d recommend checking what Dr. Bob has in stock. I know I’ve purchased thermometers from him for a much lower price, both jointed and not.

Ideal immersion depth depends on the still head you’re sticking it in. You want the bulb of the thermometer to be in the vapor path to get an accurate reading.



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Oncorhynchus
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[*] posted on 29-9-2022 at 05:40


Quote: Originally posted by Texium  
Quote: Originally posted by Oncorhynchus  
Does anyone have any experience with these thermometers?

https://www.amazon.com/Liquid-Thermometer-Immersion-Organic-...

Also, is a 25mm immersion enough for a 14/20 distillation setup?
Thats mighty pricey for a glass thermometer. I’d recommend checking what Dr. Bob has in stock. I know I’ve purchased thermometers from him for a much lower price, both jointed and not.

Ideal immersion depth depends on the still head you’re sticking it in. You want the bulb of the thermometer to be in the vapor path to get an accurate reading.


Unfortunately Dr. Bob is all out of thermometers. I'm trying to work out what would be more cost effective between just getting a jointed thermometer and getting a cheap thermocouple and whatever adapters would be necessary for use with a 14/20 still head (with a 10/18 thermometer joint). Any guesses?
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