What are the various methods of placing a thermocouple wire on a polished aluminium extruded channel without physically damaging the channel at high operating temperature?
Do you have natural convection inside or outside of the channel? Is the channel thermally insulated from the outside? How thigk is the aluminium wall? What is rhe maximum temperature?
it is a external natural convection problem and the thickness of the pipe@1mm
one more to mention i cannot braze it because thermocouples are limited they are to be used to test for various cross sestions.
maximum expected temperature in the order of 200 deg C.
i am trying with self adhesive teflon tape but the adhesive is not withstanding higher the temperatures.
is it better to use polyamide kapton tape @ 200 deg C
You may refer to the several adhesives produced by www.masterbond.com and choose one with high thermal conductivity and temperatures that satisfy your needs.
Choose a thermocouple with tiny wires so to minimize thermal conductionthrough them.
You coul go also on
http://www.cotronics.com/vo/cotr/
If you use a non-electrically insulated welding thermocuple adopt an adhesive not electrically conducting.
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