Probe Placment

Gliden07

Well-Known Member
So I've been building my new forge for 2 years now (LOL)!! Ive been getting along with my smaller ones! I started work on it again and want to put a Temp probe in it but was wondering where I should put it? 20190516_143701.jpg
This is the side view prior to all the additional things I've done. It has a flat floor in it and the burner tube are angled up to swirl the flame. I was thinking in the middle of burners next to the forge floor (floor is made from kiln shelf). Didn't know if that is a good place or not?
 
I've found that I get the most accurate reading with the probe in the back.... in the case of that forge (If I'm viewing it correctly), I'd place it at about 3 o'clock position a couple inches forward of the back end.

For what it's worth to you........ Not sure what size burners you're going to use, but if they are near the size of the holders, you might be way overkill. I will also warn you, a single, properly sized burner would be much more efficient, and far easier to "dial in" and/or control.

No matter how hard you try, if you have multiple burners running off a single fuel source, you will ALWAYS have some starved for fuel, and others too rich..... and when you get a single burner running correctly, the other are not. I get emails and phone calls on nearly a daily basis from folks wanting my help getting multiple burner forges to run correctly... and frankly its a waste of effort. The ONLY way to make multiple burners work correctly in a forge, is for each burner to have an independent fuel source....from the tank to the burner...... so it's just not worth it. Just my 2 cents.
 
Ed I started building this prior to consulting anyone. Figured out how big it was and sized burners accordingly. Im using the Atlas 30K Burners, volume wise ot was a tad over but not crazy. I did use the larger tube (burner holder) so I could aim them better (give me a little adjustment). Truthfully glad to hear we're i should place the probe makes it a lot easier to drill accurately! How far into the chamber should it stick out??
 
Just in case.... do not use a probe "well" in a forge application..... depending on the well material, it results in wildly inaccurate readings.

OK, that being said, and assuming it's a type "K" thermocouple, the working components are in the first 3/4-1".... so that all you need protruding inside the forge lining.
 
Yup K type good for 1300C. Obviously gonna cut off excess wire when I get the hole figured out!20200810_151614.jpg
 
OK! Thanks for the pic....that makes it easy!

On that type of thermocouple, that round ceramic bead on the end....has to be totally exposed on the interior of the forge/lining. The toughest part with that kind is getting the +/- wires in the right places....but then again....if it doesn't work or reads negative.....just switch the wires! ;)
 
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