[TheForge] K thermocouple

[James Binnion]

You really need a way to amplify and linerize the thermocouple output  
voltage as it is not a linear degree/volt output. There are dedicated  
meters called pyrometers that correct some of this with their  
calibration on the faceplate. Go to http://www.omega.com/temperature/ 
Z/pdf/z021-032.pdf for a polynomial formula that will allow you to  
figure out what voltage corresponds to what temperature. You will  
need a very accurate meter as the voltage output from a type K  
thermocouple is a maximum of 50 millivolts (.05 volts) .  To see a 1  
degree C change you will need a meter that has a sensitivity of . 
00004 volts or beter.

Jim


On Nov 17, 2005, at 3:20 PM, Chris Kilpatrick wrote:

> Hi Folks,
>      How does one hook a K thermocouple up to a multimeter to  
> determine forge temperature?
>
> Thanks,
>
> Chris K.
>
> It is I who formed the blacksmith,
> who fans the flame into a fire and
> fashions a weapon fit for it's work.
>
>
> -- 
> _______________________________________________
>
> Search for businesses by name, location, or phone number.  -Lycos  
> Yellow Pages
>
> http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/ 
> default.asp?SRC=lycos10
>
> _______________________________________________
> Manage membership or unsubscribe at:
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  blacksmithblacksmith at hotmail.com
> password:  anvil
> ___________
>
>
>
>

James Binnion
jbin at well.com