V High temp

[defuzz]

Could anyone point me in an appropriate direction for measuring very high temperatures (0-1200c)

What kind of sensor wire could I use for this?

Any help gratefully accepted

 

[Jaguarjoe]

A type K thermocouple is good to 1250c.

 

[leftyretro]

K type thermocouple and K type wire is probably the only cost effective means to measure such a high range. Omega (dot) com has lots of publications on use and selection of thermocouples

http://www.omega.com/techref/colorcodes.html

Lefty

 

[womai]

Contact-less, infrared-based measurement is another option. Not as cheap though. Typically looks like a pistol that you point towards the object whose temperature you want to measure.

Wolfgang

 

[Andres Rodriguez]

You can buy a Type K thermocouple in Ebay for a few dollars. And Peter Anderson has the code for interfacing a Picaxe to a Max 6675 or Max 6674 You can find the code at http://www.phanderson.com/picaxe/max667x.html

 

[Jaguarjoe]

The 12 bit MAX6675 part is only good to 1024C. The 10 bit 6674 is way worse at 128C.

 

[defuzz]

yup, cheap is good so non-contact IR readings are out, and anyway, the kiln unit will be enclosed and insulated so measuring from outside won't work.


thrmocouple sounds like the thing to use, accuracy isn't a huge issue anywhere within 50 degrees is accurate enough for what I'm doing.


Anyone know where to get thermocouples in the UK in small orders?

my usual component places (maplin, ebay and tech-supplies!!) come up short.