I tried to use my own tool earlier this week and it crashed with an exception when running on 64-bit Windows while trying to read all files in a directory. So perhaps I should look into that. Or I could ask Google to see whether other people did a better job writing better tools to read the data from the Energy Logger 3500…. And there was a number of tools available.
This is an overview of all the tools for the Energy Logger 3500/4000 I could find online.