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Flow Measurements

Mass-Flowmeter

Mass Flow Meter

A mass flow meter is a device that measures the mass or volumetric flow rate of fluid moving through a tube. The mass flow rate is measured by the fluid travelling past a fixed point per unit time. They are most effective in mass related processes as they measure the force that results from the acceleration of mass. Typical applications for mass flow meters are related to chemical and gas processes. However, other industries such as pharma, power, mining and wastewater also make use of mass flow measurement equipment.
megnetic-flow-meter

Magnetic Flow meter

Magnetic flow meters are a common flow meter which utilises electromagnetic induction. They work by applying a magnetic field to a metering tube which then results in a potential difference proportional to the flow velocity perpendicular to the flux lines. Mag flow meters are most commonly used in the wastewater industry.

Vortex Flow meter

A vortex flowmeter comprising: a flow sensor operable to sense pressure variations due to vortex-shedding of a fluid in a passage and to convert the pressure variations to a flow sensor signal,in the form of an electrical signal;and a signal processor operable to receive the flow sensor signal and to generate an output signal corresponding to the pressure variations due to vortex-shedding of the fluid in the passage.

orifice

Orifice Plate Assembl

An orifice plate is a device used for measuring flow rate, for reducing pressure or for restricting flow (in the latter two cases it is often called a restriction plate). Either a volumetric or mass flow rate may be determined, depending on the calculation associated with the orifice plate. It uses the same principle as a Venturi nozzle, namely Bernoulli’s principle which states that there is a relationship between the pressure of the fluid and the velocity of the fluid. When the velocity increases, the pressure decreases and vice versa.

glass-tube-rotameter

Rota meter (Metal Tube/Glass Tube)

A Rotameter is a device that measures the volumetric flow rate of fluid in a closed tube. A Rotameter requires no external power or fuel, it uses only the inherent properties of the fluid, along with gravity, to measure flow rate. A rotameter is also a relatively simple device that can be mass manufactured out of cheap materials, allowing for its widespread use.

Flow Totalisers

A Flow Indicator Totaliser (Totalizer) is a device that measures electrical signal from a flow sensing device flow sensor/ flow meter. This electrical signal can be 4-20mA or 12VDC / 24VDC pulse type. A Flow Indicator Totaliser (Totalizer) scales this signal in terms of M^3/ Hr, Kltr/ Hr, Kg/Hr etc. and displays it. This is instantaneous flow rate. The Flow Indicator Totaliser (Totalizer) integrates it to calculate cumulative flow. Flow totalisers / totalizers are mostly used in Chemical and process industries, public water distribution system, effluent treatment plants, petrol pumps etc.