Thermocouples and other metallic sensors will pick up EMI from changing magnetic fields. This adds noise to my data. Placing thermocouple length in SS braid does not prevent EMI for the fields it is exposed to, I think the frequency I'm exposing it to is just too low (less than 10Hz). Maybe soft iron foil wrapped around the length of the thermocouple will help.
To circumvent the EMI issue I have been looking into buying (or developing) some non metallic temperature sensors. No metal would mean no EMI. First and second test of home brew fiber optic temperature senor did not work.
Worked more on the magnetics of the cooler. Made progress, Will run tests tomorrow.
Need to make a thin glass tube filled with oil so that the FEA can interface with the new magnetics that I made