▶️ Flow Measurement

Short Notes on Differential Pressure Flow Meters

In Differential Pressure Meters, obstructing flow is used to create a pressure drop. The flow rate is calculated using Bernoulli’s principle.

In Nutating disc flow meters, When fluid enters the chamber, it causes the disc to rotate and this is used to measure flow rate.

Oscillating piston flow meters use a precision machined chamber containing a cylindrical piston that oscillates as liquid flows.

Positive Displacement Flow meters are volumetric flow measurement instruments that measure flow by passing a precise volume of fluid.

Lobed impeller flow meters consist of two impellers rotating in opposite directions due to the forces exerted by the gas flow being measured.

Advantages & Disadvantages of Different Flow Meters like Electromagnetic Flowmeters, Ultrasonic Flowmeters, Coriolis Mass Flowmeters, DP Flowmeters

There are different Classifications of Flow Measurement Techniques for measuring the flow rate and total flow. Each has specific characteristics.

Pitot Tube measures the difference between total pressure and static pressure and it is converted into a proportional flow rate.

Orifice plate pressure tappings are used to allow the transmitter to tap into the pipe to measure high and low-pressure sides of flow.

Ultrasonic Flow meters measures Fluid velocity by sending ultrasonic pulse from an upstream transducer to a downstream transducer and back again.