Roaster Control

[Ramper]

Cooked a ham in our roaster. We have always felt like temperature indicated on the dial is way lower than the actual temperature. Is there a way to adjust/replace this piece? Seems like if I tightened or loosened the middle screw if might change things.

 

[nadogail]

To the best of my knowledge the middle screw is the calibration adjustment.

 

[BrandonV]

You have a model number? Usually best to start with any literature to see how they want it calibrated.

 

[gungatim]

Most of them don't use a potentiometer but a temp sensor that cycles them on and off. they aren't designed to keep a constant temperature, just full on to full off for varying periods of time. To test it, put water in it and watch it boil, then stop, then boil, then stop.

 

[Ramper]

I will get a model number tonight.
There is a heating band around the metal "tub". There does not seem to be a temp sensor other than the control dial. It is definitely all on or all off. The only sensor appears to be the control unit.

 

[no704]

Get an Inkbird PID controller with a thermocouple and SS relay for around $40 on Amazon. I just put one on a $30 toaster oven that would have 75deg temperature swings. Now holds within 3deg.

 

[no704]

 

[BrandonV]

What you doing with that rig if you don't mind me asking?

 

[dave*99]

I have installed a couple of these inkbirds on kegerators. I like the beer 0.2 degrees above its freezing temperature.

https://www.amazon.com/Inkbird-Max-1200W-Temperature-Controller-Greenhouse/dp/B01HXM5UAC/?tag=atomicindus08-20

 

[no704]

What you doing with that rig if you don't mind me asking?

Drying out capillary tubes of radium nitride, if you really want to know.

 

[wyliesdiesels]

Drying out capillary tubes of radium nitride, if you really want to know.

why you messing around with radium?

 

[BrandonV]

Drying out capillary tubes of radium nitride, if you really want to know.

Very cool. Sad my research days are over .

 

[no704]

why you messing around with radium?

Making Ac225

 

[BrandonV]

Making Ac225

Very cool. You guys have an inhouse linac/cyclotron or you using a larger facility?

 

[no704]

Very cool. You guys have an inhouse linac/cyclotron or you using a larger facility?

We have an in-house linear accelerator, but we are using a reactor.

 

[BrandonV]

We have an in-house linear accelerator, but we are using a reactor.

It's great you're allowed to build your own oven... The list prices on "lab" equipment is bonkers.

 

[RPH]

We have an in-house linear accelerator, but we are using a reactor.

It’s great to play with things you can’t see.
I have a few of the controls around from my working days. The only problem I have is the UL labs label is no longer good due to modification of original design. Small price to pay for a working lab unit.

 

[no704]

It's great you're allowed to build your own oven... The list prices on "lab" equipment is bonkers.

Yes it is! And for this intended use we were shooting for small and lightweight more so than cheap. As the real expensive part will be disposal of it when we are done. Also we are only looking for slightly under boiling. Most lab grade stuff is junk! I have a tube furnace that got the same treatment, but it is too valuable to turn into rad waste, and would have a hard time with such a low temp.

 

[no704]

It’s great to play with things you can’t see.
I have a few of the controls around from my working days. The only problem I have is the UL labs label is no longer good due to modification of original design. Small price to pay for a working lab unit.

In a past life I ran a UL certified lab. Nothing like having 2 certified tape measures so you have one to use when the other is out being “calibrated”!

 

[Bert_]

On the original question, I would just mark the bottom of the roaster with something like "dial reads 50° low" no reason to make it too complicated.

 

[wyliesdiesels]

Making Ac225

wow what are you using the actinium for?

nuclear/radioactive stuff fascinates me to no end. ive done tons of hobby reading and research on reactors/designs, weapons, decay chains, waste, accidents, history, contaminated sites, cleanup projects, etc etc etc

 

[BrandonV]

wow what are you using the actinium for?

nuclear/radioactive stuff fascinates me to no end. ive done tons of hobby reading and research on reactors/designs, weapons, decay chains, waste, accidents, history, contaminated sites, cleanup projects, etc etc etc

Probably cancer treatment if I were to guess. It's actually very cool how these radioisotopes are generated for medical purposes.

I have experience with Tc-99m and that stuff has a half life of roughly six hours which means it needs to be manufactured at a site with a Tc-99m generator from Mo-99 and then delivered fairly rapidly to hospitals.

I know at one point they were talking about making it via cyclotron production since there were only a handful of reactors generating the Mo-99 isotope as a byproduct.

 

[bronc076]

This by far the most interesting thread hijack I've ever read! And a cool temperature controller, makes me want to build a super accurate oven for cooking ribs or isotopes or whatever!

 

[no704]

Sorry for the thread hijack.
Please see our website
servaenergy.com
And click the medical tab.

 

[no704]

Ramper, have you received your Inkbird controller yet?