[TriEmbed] need stupid pet trick immediately

Jim Carlson jbcarlso at ncsu.edu
Wed Oct 15 15:20:02 CDT 2014


I was going to suggest a paper clip

On Wed, Oct 15, 2014 at 3:44 PM, Pete Soper <pete at soper.us> wrote:

> I've got four of the typical high temp fabric-coated type K thermocouple
> probes and can't get the buggers to reliably sit with some tension on the
> top of PCBs in an oven. I can imagine many solutions better than the
> fractional hectares of Kapton tape I'm applying along with bending the
> freaking things down, then pulling them back up with the silly hope that
> they'll sit on the target board surface.  The kapton is of course screwing
> my experiment 'cause it is a fabulous heat insulator.
>
> What is the proper way to do this??? The crux of the problem is
> "something" that can magically hold the last inch or so of thermocouple
> lead down against the PCB where the lead kisses the PCB and the thing
> holding it down doesn't itself hose up the temperature measurement process.
>
> This is what the oven drawer looks like. As you can see, the thermocouple
> lead is threaded through the slots in the drawer, and with a bit of tape
> that keeps it from being sensitive to the drawerin being slid back and
> forth. It's that last bit of getting the thing to reliably sit on the PCB
> and not pop off and start measuring air temperature that's killing me. Any
> help appreciated.
>
>
> http://triembed.org/blog/wp-content/uploads/2014/10/2014-
> 10-05-T962-Actual-With-Text.jpg
>
>
> -Pete
>
>
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-- 
Thanks,
Jim Carlson
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