Ori Flow Meter (By- Pass Rotameter)
The ori-flow meter measures flow by inserting an orifice at part of the piping, generating differential pressure before and behind the orifice by means of the flow, and extracting this differential pressure by a suitable method.
Differential pressure (p1-p2) of main orifice & the flow Q have shown in Equation given below. The flow is proportional to square root of the differential pressure
- ➩ Q :volumetric flow
- ➩ c :flow co-efficient
- ➩ f :cross sectional area of orifice hole
- ➩ g :acceleration of gravity
- ➩ P1-P2 :differential pressure
- ➩ P: specific weight of fluid
