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Thermometer - Forno Bravo Forum: The Wood-Fired Oven Community

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Dome Installation Video - Casa / Premio / Modena

Hello,

For many of you who bought a modular oven, you may have asked how we put the domes together when we build them. For those of you considering one of our ovens, we shot a video to make your install easier.

Check it out on our You Tube Channel.

https://www.youtube.com/watch?v=-7q7...jSniYogfUra06Q

If the link doesn't work, simply go to You Tube and type Forno Bravo Channel. The video title is How to Set your Forno Bravo Oven Dome Pieces.

Thanks for participating in our Forum. We will have more video content available soon.
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Thermometer

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  • Thermometer

    Okay, I have been planning this damn oven for some time now, the Spring is here and I am ready to start...
    I would really love to have a nice big thermometer showing the dome temperature at a glance, kinda like the ones you get on a weber bbq (but BIGGER).
    Where on earth can I find something like this in the UK. Has anyone else done this I have searched the forum but not found anything.

    I will take some photos soon so you can all follow the build.

    Also if there is anyone in East Sussex Kent area that needs to buy fire bricks, we could chip in together to get the price right down.

    Cheers

    Ryan

  • #2
    Re: Thermometer

    Most barbecue thermometers only go up to 600 F. These can be useful mounted in the door for slow cooking. For measuring the higher temperatures most go with a hand held infrared thermometer, or a thermocouple system.

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    • #3
      Re: Thermometer

      I bought thermocouple wire online and built my own. I've got four thermocouples and a meter with only 70$ invested. They work great by the way.

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      • #4
        Re: Thermometer

        How did you make your thermocouple? I've got the appropriate 22ga wire with SS braid jacket. Do you just twist the ends together or what?? And, which wire is the (+) positive — the one with the stripe or plain? When I plug the bare wires into my meter with the stripe in the (+) side I get a reading that is approximately what I have on a thermometer sitting on my desk. With the stripe wire in the (-) side it seems like the temp reads 4-5 degrees less. I guess the stripe wire is (+) positive?

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        • #5
          Re: Thermometer

          James has a nice thermometer for sale with a big dial and 3m cable for the remote probe. It is a little pricey at $200, but is a nice piece. I have mine mounted inside the oven 4" above the floor. The thing about temperatures is that it is different depending on where you are measuring it. When my thermometer reads 700, the dome is 800- 1000 depending on how vigorous the fire is. So for cooking you need to get a feel for the oven, depending on how long it has been fired, how big your current fire is etc.
          The thermometer mounted in the oven does give me a reference, then I use the IR for measuring the floor temp. I have linked some photos of my install
          Good Luck,
          Eric
          Attached Files

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          • #6
            Re: Thermometer

            look on line you should be able to find a cheaper one if this is the way you want to go

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            • #7
              Re: Thermometer

              My build is using a dual thermocouple (one floor, one dome) and dual pyrometer system. The instruments are Diesel pyrometers from VDO, and they are backlit and sexy. Basically they are the instruments you might find in a Mercedes-powered boat, and are simple to read and range from about 200 to 1650 degrees, and one should be able to distinguinsh 50 degree increments. Summit Racing has them. You will need to get a transformer to step down household voltage to 12VDC.

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              • #8
                Re: Thermometer

                Originally posted by lwalper View Post
                How did you make your thermocouple? I've got the appropriate 22ga wire with SS braid jacket. Do you just twist the ends together or what?? And, which wire is the (+) positive — the one with the stripe or plain? When I plug the bare wires into my meter with the stripe in the (+) side I get a reading that is approximately what I have on a thermometer sitting on my desk. With the stripe wire in the (-) side it seems like the temp reads 4-5 degrees less. I guess the stripe wire is (+) positive?
                I used a resistance spot welder to fuse my thermocouple wire together just because I had easy access to one. My second choice would have been silver solder. I think the melting point of silver solder is sufficient for temperatures reached in a WFO but I would double check before you use it. As for which wire is + and which is -, a magnet will stick to the negative wire and not to the positive.

                oven thread: http://www.fornobravo.com/forum/f21/...cky-12829.html (42" Pompeii in Kentucky)

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                • #9
                  Re: Thermometer

                  Each pyrometer comes with a little Inconel shielded thermocouple with a braided leader, which you can then set into desired locations. They are threaded, as they are really meant to screw in really hot Diesel exhaust systems, but I just took the washer off and set them in strategic holes in the cupola.

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                  • #10
                    Re: Thermometer

                    Also I figure the sensing tip of the thermocouple should go be placed as far to the exterior wall of the thermal mass as possible, and beneath the insulation. That way the temperature readings are more likely to represent the "true" temp of the dome rather than the temperature of the air/ combustion gas inside the cupola. When an external pyrometer reaches 700F, then you know the brick mass beneath it is at least that hot.

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                    • #11
                      Re: Thermometer

                      I just picked up an Ashcroft analog thermometer on eBay for $25. It's a take-out from some industrial application (dial looks like new, but you can see the working end has been hot - actually came in it's OEM packaging from 50 years ago), probably monitoring flue temps or something. Any how, it's gas powered (has a little bulb on the end with about a 20 foot capillary tube going to the readout) and has a temp range of 400-1200F degrees in 10 degree increments. New they go for $5-600 and are rare as hens teeth in the second-hand market. Guess I got a deal on that one. I'm planning on putting it in the dome along with thermocouples. It just seems that it would be handy to have a continuous, non-battery way to read the oven temp.
                      Last edited by lwalper; 05-23-2010, 10:17 PM.

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