[TheForge] more gas (the propane kind)

Mon Apr 21 23:25:00 2003

There are much cheaper industrial temperature probes etc.

Look for Omron temperature controls, in the Newark catalog.  Sensors for
these controls can be as simple a piece of thermocouple wire (about 2.00 a
foot)  The best probe is one that's stainless steel preferable a solid piece
like I use about 3" long.  I then mechanically attach the glass coated
thermocouple wire to the piece of stainless about 2/3 of the way through my
refractory this protects the thermo couple and gives in a reading that's "no
shock"  basically that means the junction of the thermocouple is not
directly in the heat source where it can be damaged.  I will get the Omron
number later and post it, they used to be around 100.00 and have outputs etc
that could be used to shut down an electric gas valve should something over
heat during a heat treat operation etc.

Paul

----- Original Message -----
From: "Steve Smith" <[email protected]>
To: <[email protected]>
Sent: Monday, April 21, 2003 8:15 PM
Subject: Re: [TheForge] more gas (the propane kind)

> As another mentioned, Omega makes pretty reasonable stuff. A type K
> thermocouple works well at forge temperatures (to the kind of accuracy
> we need, anyway) despite being technically beyond it's use range. Get
> heavy gauge wire for the thermocouple and it will last much longer.
> Omega will make one up for you for not too much money. One caution, make
> sure that whatever meter you use will reach the temps you want to
> measure; the less expensive ones leave off the top end of the scale
> (might only go up to 1500F or something).
>
> Steve Smith
>
> Sheldon Laing wrote:
>
> > I would also like to install a temperature reading device one the forge
> > with the probes inserted into the forge chamber. Can I put these probes
> > just anywhere inside the forge chamber and once again any website
> > relating to this would be a help. Also if there are any particular
> > brands of thermometers that are made for a forge/furnace situation, what
> > are they and what sort of price tag am I looking at?
> >
> > Looking forward to your responses,
> > Sheldon Laing
> > Hephaestus Forge
> > Cape Town
> > South Africa
> > [email protected]
> >
> >
> >
> >
> >
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