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Help constructing a heated box.

Discussion in 'General Electronics Discussion' started by sgthanley, Feb 2, 2011.

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  1. sgthanley

    sgthanley

    3
    0
    Feb 2, 2011
    Afternoon!

    I need to create a metal box with an adjustable temperature range for an experiment one of the researchers at work wants to run. It needs to hit at least 200 degrees. I planned on using strip heaters for the heat, but am having trouble figuring out how to control the temperature. Most of the strip heaters I have found online reach up to 900 degrees. The steel box I'm having our shop build for us can handle that and I'm sure at some point, one of the R&D guys here may want to reach that level some day, so I'd like advice on what to use that can cover a wide range.

    Thanks in advance!

    Vic
     
  2. rob_croxford

    rob_croxford

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    0
    Aug 3, 2010
    Were you hoping to design this controller yourself our buy one??
     
  3. sgthanley

    sgthanley

    3
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    Feb 2, 2011
    Definitely purchase if possible
     
  4. sgthanley

    sgthanley

    3
    0
    Feb 2, 2011
  5. rob_croxford

    rob_croxford

    262
    0
    Aug 3, 2010
    Ok well i hope this isnt seen as advertising but i am in the business of designing and building Proportional thyristor controllers for resistive heater banks. Would simply need the wattage of the heater (from arround 3KW-160KW). You would of course have to design a feedback loop. For instance if the controller takes a variable DC input of 0-10VDC that variable input would come from a thermostat. However you could use a potentiometer (10K) to control the amount of power sent to the heater. Hope this helps!
     
  6. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,490
    2,831
    Jan 21, 2010
    I recently bought one of these and I've been very impressed.

    If the metal box could be something like a toaster oven then you may even be able to buy (almost) everything off the shelf.

    The controller requires external power, a SSR and some sort of housing. It interfaces with a PC to provide a user interface and to give you pretty graphs of the temperature.
     
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