What kind of pressures are we talking? Is this a water or oil system?I am working on an experiment where i would like to see how the system responds to pressure fluctuations.
I tried using a stepper motor and a cam arrangement to create pulses in the pipe carrying water to the system. However, I can't get higher frequencies of pressure oscillations.
I have flow rates in the range of 0.01 to 0.09 ml / min. I have a syringe pump to take care of that. However, I am unable to figure out how to introduce pressure oscillations into the system.
That is when i thought a piston pump working at low rpm may do the trick. The pressure need not be fixed, but should be consistent.
Hope this info is more adequate.