Flow Measurement - Instrumentation Tools

Lobed Impeller Flow Meters Working Principle

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.

Types of flow meters are divided into two groups. One measures quantity (Positive Displacement); the other measures rate of flow (Inferential).

In Linear to Square Root Conversion, Relationship is non-linear there is a greater change in flow at low pressures compared to higher ones.

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

Coriolis ﬂow meter works by vibrating one or more tubes carrying ﬂowing ﬂuid, then measuring the frequency and phase to find mass flow rate.

Mass flow meters are the types of flow meters that are mainly employed in mass-related processes such as chemical reactions,