How do you construct an OVEN THERMOMETER?

[annagrace]

I need to construct an oven thermometer out of scratch using any materials that are purchasable. Our restrictions are:
- No mercury
- The product must be able to read from 250 degrees fahrenheit to 500.
- MUST FIT IN THE OVEN PLZ.
thank you

 

[russ_watters]

Is this homework? AFAIK, most oven thermometers use a bimetallic strip wound in a spiral.

 

[annagrace]

but we are wondering if you know how to construct it

 

[russ_watters]

Um... what I said doesn't give you enough information? Is this homework?

 

[annagrace]

yep, this is a bonus project for our physics 11 class. any help would be greatly appreciated

 

[Hurkyl]

I need to construct an oven thermometer out of scratch using any materials that are purchasable.

Any materials at all? I would start by purchasing an oven thermometer.

 

[TVP45]

Look at www.Omega.com for ideas (You could even buy some of their stuff if you wanted).

 

[stewartcs]

but we are wondering if you know how to construct it

Just like Russ told you...a bi-metallic strip in a spiral shape. Just put a pointer on it.

http://www.tpub.com/content/fc/14104/css/14104_236.htm

 

[Math Jeans]

I don't even think you need a bimetalic strip. All you really need is a metal with a very high melting point, you need to know its coefficients of thermal expansion, and you need a micrometer.

Of course, this is only as a last resort if you cannot create a bimetalic strip.

 

[rcgldr]

How about a thermal couple and a voltmeter?

 

[noagname]

why don't you buy one and scratch the company's name off and put yours on

 

[wysard]

First: Construct an oven

Second: Construct a usefull measure for telling if the oven is "ovening"?

Otherwise:
- Buy one?
- Use a pyrex 1 cup pitcher near the door and calculate the rate of evaporation?
- Put a Christmas Card from one of your Ex's in the oven. When it ignites the oven has passed Fahrenheit 451?

Ideas abound...