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Flow rate

The volume of liquid or gas which flows through a filter or device at a specified pressure in a specified amount of time (e.g. 20 mL/min @ 30 psi).

FAQ
Flow rate is the volume of liquid or gas which flows through a filter or device at a specified pressure in a specified amount of time (e.g. 20 mL/min @ 30 psi).
A units check gives area x length/time x time = area x length = volume. Mass m in this volume is density r x volume. Mass flow rate mdot is divided by the mass of time.
You will need:
  1. A container with a known volume
  2. A device to keep time
  3. A pressure gauge
  4. A way to record findings

Volume units/ time units = flow rate

Volumes can vary with pressure when air is put into motion. If you were to double the line pressure, the flow rate will half, and decreasing line pressure can increase the flow rate volume. Whereas, the mass flow rate molecules do not change.
Velocity is a vector quality that describes the rate that an object can change its position. An SI unit is m3/s. For the mass flow rate it is the mass of liquid/ fluid that passes per unit of time.