elson at pico-systems.com
Fri Aug 28 21:46:00 CDT 2015
On 08/28/2015 12:55 PM, Mark J. Blair wrote:
>> On Aug 28, 2015, at 10:41 , Jon Elson <elson at pico-systems.com> wrote:
>> The trick is to poke a tiny thermocouple into a plated through hole in one of the boards. Then, the controller is measuring actual temperature. I tried having the thermocouple in the air, and the boards got seriously fried.
> I had planned to tape a thermocouple to the board, but putting it in a plated through hole seems like an even better idea. For my own board designs, I can make sure to include a hole of the right diameter for whatever thermocouple I use, at my best guess of an optimum point on the board to measure temperature.
I was lucky to get 1000 feet of tiny thermocouple wire in an
odd type (Type E) . But, my temp controller had that type
available in its menu.
Then, the only problem is the temp variation across the size
of the oven, which can be considerable.
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