The trick is to make sure that the TC wires are molded by hand to lay by themselves on the board and secured with the Kapton or any hitemp tape. They should not by force down with the tape. When the TC stay put time after time through the oven the results will be about 2 degrees lower than if they are soldered with high temp solder. If they are forced down with the tape, the wires will spring up when the glue becomes weak by the heat.  So Dr. ZapFart does not know what he is talking about.
        It is just my opinion,
        Ramon

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Steve Gregory
Sent: Saturday, October 23, 2004 12:10 AM
To: [log in to unmask]
Subject: Re: [TN] A poll of sorts...concerning thermocouple attachment


Hi Phil,

I guess I'm what you call a "Bozo". I use Kapton tape quite often when I do
my profiling. I however, don't cover the thermocouple tip with it, but just
use  it to secure the wires.

My thermocouple tip is shaped and placed with tweezers to be at  the solder
joint I want to monitor,and then the wire is secured along the  assembly at
places so as not to disturb the rest of the components. The  thermocouple tip
isn't covered by anything...high temp solder, epoxy, aluminum  tape, or anything.

Just because I use Kapton tape, doesn't mean that I'm a "Bozo"...

-Steve Gregory-

According to Dr. Zapfardt in the October issue of Circuits Assembly  ("On  The
Forefront")attaching the TC with Kapton tape is for bozos  who really are not
interested in actually getting accurate profiles, but  are just killing  time.
I couldn't have said it better  myself.

Phil Zarrow
ITM Consulting
Durham, NH   USA
www.ITMconsulting.org





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