Type K Thermocouple extension wire

[strobes]

I'm looking for reasonably priced wire, enough to install 2-3 sensors.
Extension wire is fine, I can located equipment to weld it.
Any suggestions? Or you may have some extra?
Thanks!

[Audionatic]

Re: Type K Thermocouple extension wire

I found mine on a popular online auction site. 50' roll of brown fiberglass-clad K type wire was approx. $35.00. I should have my thermocouples embedded in a week or so, if the weather allows.

[strobes]

Re: Type K Thermocouple extension wire

like this?
http://www.awcwire.com/productspec.a...rmocouple-wire
Type K Thermocouple Wire with Fiberglass Insulation (482?C)

[Audionatic]

Re: Type K Thermocouple extension wire

some on there now thats even cheaper. Less than $15.00/25'.

[strobes]

Re: Type K Thermocouple extension wire

what is max. expected temperature inside the oven?

[Audionatic]

Re: Type K Thermocouple extension wire

Maybe 1200-1400 F.

[strobes]

Re: Type K Thermocouple extension wire

is the Fiberglass Insulation rated to about 500?C?

[Audionatic]

Re: Type K Thermocouple extension wire

I'm not sure of the rating, but it's what you'd use for higher heat and abrasive conditions, I think. The probes I bought are the 12" grounded type, so the wire and connections will be either in the insulation, or most of them outside the insulation in ambient temperature. I have a probe set into the hearth brick at 1" below the surface, and two set at the outer surface of the hearth brick, dead center of the hearth floor. These should indicate hearth surface temp, and gauge hearth brick saturation.
There'll be another 5 in the dome. One just exposed at top dead center inside the dome, 2 set into the middle of the dome brick towards the front and back, and two more in the concrete cladding layer left and right, again to indicate saturation temps for baking.
I'm pretty sure that wire will hold up well as far as heat goes. I'm more concerned with long-term corrosion at the connections to be honest, that's one reason I wanted a few redundant probes installed. I found a cheap, analog kiln gauge for $10, the 8 probes were $35, a used 8-position thermocouple switch for $10, and the wire, online. Good luck!