Different Types of Liquid Flow Meters

Different Kinds of Liquid Flow Meters

There are different kinds of liquid flow meters, depending on the circumstances in which the flow meters are used. 


 1. Closed pipe flow meter:
The closed pipe flow meter is a type of flow meter that is used for fluids flowing in a closed conduit like sewer, kitchen pipeline, water pipeline, fuel pipeline, etc. and the open channel includes measuring the flow in a non-constricted area. 

2. Differential Pressure Flow Meter:
Being the most common flow meter in use, it has primary and secondary component. The first component changes the kinetic energy and the second one measure the differential pressure, which produces a signal that can be changed to get the flow rate.  

3. Velocity Flow Meters:
This flow meter operates directly with the volume flow rate. It translates the data of the velocity of water into its volume. When the flow meter is used with Reynold’s number greater than 10,000, the flow meter becomes insensitive to the viscosity change of the fluid.

4. Positive Displacement Flow Meter:
The flow of water is measured by correlating it with the number of times the chamber is filled and emptied with water. It includes Nutating Disc, Rotary Vane Meter, Reciprocating Piston Meter, and Oval Gear.  

5. Mass Flow Meter:
This flow meter measures the mass of fluid flowing through a particular point per unit time. This flow meter consists of Coriolis and Thermal Flow Meter.

6. Open Channel Flow Meter:
It refers to the liquid flowing in the free surface and analyzes the flow rate by measuring the water depth. It has two categories- Weirs and Flumes.

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