Ok, after some more searching I think I have found a current sensor exactly like what I had envisioned but I still don’t know if it is legal per the wording highlighted above in <R44>.
Are these Phidgets line of current sensors legal per <R44>? I know CD in not the official word on legalities, I am asking if the general opinion is or is not that these Phidgets current sensors would be considered “low impedance current monitoring circuitry” per <R44>?
50A :
Manual
30A :
Manual
20A :
Manual
If they are legal then they seem like they would be easy to connect to the cRIO analog inputs and program to read the current draw thus exactly solving our problem.
These are available from several places including
Trossen Robotics.