There are thermocouple to digital converter integrated circuit,( e.g. Maxim MAX6675) which would be a good place to start if you want to build something.
There are also a number of kiln controllers on the market. Craig On 11/1/2010 12:44 AM, Mark Wendt wrote: > > On 11/01/2010 01:28 AM, Jon Elson wrote: >> Igor Chudov wrote: >> >>> I would like to know if there is something for Linux that could >>> control heat treating ovens, like this one. >>> >>> >> I got a "ramp and soak" temperature controller on eBay for about $50. These >> look like the typical 1/16 DIN controller units, but have additional >> programming >> features in them, so you can set multiple setpoints with programmed ramp >> times >> between them and programmed soak times at each temp. So, you get the >> program, >> the thermocouple signal conditioning and the SSR output control all in >> one box. >> You'd pay WAY more for this as a PC plug-in card, and could wait years >> to find >> one on eBay. The ramp and soak controllers come up quite frequently, >> though. >> >> Jon > Jon, > > That's what I was pointing out to Igor. Those things work great, > and are relatively inexpensive on the 'Bay. Heck, the new house > thermostat I bought about 8 months ago has the PID fuzzy logic built > into it. After a learning cycle or two, the thermostat knows exactly > when to turn the heater/air conditioner on so that the house is at the > set temp by the set time. Pretty cool stuff. > > Watlow controllers are one of the more used PID temp controllers > out there, and you can always find a bunch of them available on eBay. > Probably need an SSR to carry the voltage of the heat elements in that > oven though, so look for a Watlow controller that has either logic > voltage or DC voltage as it's output. You can find controllers with > built in relays, but they won't be able to handle the voltage or current > necessary for the oven that Igor is looking at. > > Mark > > ------------------------------------------------------------------------------ > Nokia and AT&T present the 2010 Calling All Innovators-North America contest > Create new apps& games for the Nokia N8 for consumers in U.S. and Canada > $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing > Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store > http://p.sf.net/sfu/nokia-dev2dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
