▶️ Flow Measurement

Open Channel Flow Measurement Principle

The open channel flow measurement principle is to measure the height or head of the liquid as it passes over an obstruction.

By measuring change in pressure, the flow rate can be determined, as in various flow measurement devices such as venturi flow meter, orifice plates.

The coriolis sensor will detect this time difference and convert it into a standard Measurement of flow signal in the process.

Ultrasonic flow meters operate using difference in time travelled by the two ultrasonic waves is directly proportional to the flow velocity.

Annubar flow meter are sometimes referred to as Averaging pitot tubes and contain multiple pressure tappings to measure average of the flow rate.

V Cone flow meter is a differential pressure (DP) meter. These flow meters all work according to the same principle of DP flow sensors or devices.

When venturi flow meter is placed in a pipe carrying the fluid whose flow rate is to be measured, a pressure drop occurs across venturi meter.

Piston flow meters operate by a piston moving within a chamber of known volume. Piston meters are used for low volume flow measurements.

Rotary Abutment Flow Meters are another form of positive displacement flow meter. They have a wide viscosity range and maintains accuracy too.

Turbine flow meters use the rotation of a rotor within a flow tube to measure the flow of liquid. These are ideally suited for low viscosity liquids.