28 Aug
2015
28 Aug
'15
7:46 p.m.
On 08/28/2015 12:55 PM, Mark J. Blair wrote:
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.
Jon
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.