There is an adage at the pH household:
"When BillA replies to your threads, testing becomes much more expensive."
Looks like to do properly I would have to buy a fair amount of equipment. Pressure drop transmitters and reading equipment doesn't sound cheap. I am aware that the flow meter I have seriously affects flow already, but I dont have the cashflow to buy any new testing equipment at the moment.
Before I go dig up the books tomorrow, how robust are the equations? Could I reasonably do some number crunching in Mathcad and extract the same sort of information? I suppose in the end what the people who originally started this thread are interested in is how large the contribution from using smaller bore barbs/larger bore barbs compared to using smaller/larger tubing. That seems like a solvable problem to me, but I live in the realm of the semi-quantitative.
What other parameters are there besides pressure drop and flow rate? Why can't you simply estimate the pressure drop from the difference in flow rate prior to and after addition of a restriction? I apologize if I am asking a foolish question; I will read up tomorrow (if the University library is open). I still have some required reading on turbulent vs. transitional flow regimes anyway
