A bluetooth device that can be used to monitor the temperature of an object.

[k3n]

Preferably it would smaller and a little thicker than a credit card.

It would also need to withstand temperatures of 500 degrees F.

 

[Ken g6]

I'm thinking such a device doesn't exist. There are plenty of "wireless" meat thermometers, but they're not meant to have the entire device in the oven; just a wired probe. Anything as thin as a credit card would also get too hot too fast.

 

[k3n]

I'm guessing the device would have multiple (at least) 4 inches of copper wiring sticking out of it that come in direct contact with the object it was monitoring.

The bluetooth would touch it directly.

This is a for a school project.

 

[JackMDS]

Maybe this can Help.

http://www.pcsensor.com/

 

[corkyg]

Since this is for a school project, I would suggest thinking about the concepts of indirect temperature measurement. There may be something in these scholarly articles that can be used.

https://www.google.com/search?sourc..._l=hp...0.0.0.0.12995...........0.hTYjaUs2xPU

 

[Mike64]

It would also need to withstand temperatures of 500 degrees F.

What's your budget? I think you'd be talking serious money, if the product is available at all, for so small a device that can itself withstand 500F!

 

[dave_the_nerd]

Yeah, IR Thermometer FTW.

 

[corkyg]

All this now begs the question - is this school project to be actually built, or is it a design problem? If it is only an academic paper, it does not necessarily involve spending money to get a grade.

Please clarify.

 

[sm625]

Thermocouple transmitters generally do not operate beyond 85C (185F). What you do is place the transmitter away from the heatsorce, and run a thermocouple wire into the hot zone. The transmitter reads the temperature and translates that data into a digital or analog signal that you can read.

Here is an example of a dirt cheap one that turns a type K TC signal into a standard 4-20 mA output:

http://www.newegg.com/Product/Product.aspx?Item=9SIA3XT1JU2001

Once you have a more standard 4-20mA loop current you can run that into something like a 4-20 mA Sensor Board for Arduino, which can then possibly be accessed over bluetooth. It would not be easy to set this up though, you'd have to really know what you're doing. It would be much easier to simply use something like a thermocouple transmitter with a usb interface. You just plug one end into the type K TC wire probe and the other end into the PC and read the data.