Hi guys.
I'm measuring resistance of a sample by varying temperature from 300K to 2.6K in intervals of 0.5K. Temperature is adjusted using a Sumitomo CKW-21 Helium Compressor Unit and a Lakeshore 335 Temperature control. Because the compressor doesn't provide a constant flow, but rather in short bursts, it appears to be essentially impossible to stabilize temperature below 10K and it jumps all over the place.
I was wondering if you guys have any suggestions as to the optimal PID setting for the Lakeshore for different temperature ranges.
I'm thinking about trying to write a code in LabView that will automatically adjust it during the run. I have absolutely no idea how to do that right now, so any hints in that area would be greatly appreciated too!