the velocity actually doesn't matter, or maybe it's all that matters. the need is to be able to find a median measurement for relative comparison- i suppose plasma velocity, if that's all we had to measure, would work equally well as PSI after port. as to what the plasma flows into- for testing...
i'm wondering if there already exists some kind of sensor that'll accurately measure very small, very fast jets of very hot plasma in the 30k-50k PSI range. jet port sizes range from .0620 to .0900.
i'm sure there's no gage that exists for my application- or at least nothing non-proprietary...