WELCOME TO OUR WEBSITE

Flowmeter

A flowmeter is an instrument that measures the linear, nonlinear, mass or volumetric, rates of a liquid or a gas. Flow measurement is the movement of bulk fluid in quantification. It can be measured in a number of ways. Both, the flow of liquids and gases, can be measured in mass or volumetric flow rates such as kilograms per second or litres per second. If the density of the material is known, these measurements can be performed or converted between two materials.

There are several types of flowmeters available for closed-piping systems. Generally, the instruments are classified as positive displacement, velocity, differential pressure and mass meters. A few differential pressure devices include variable-area meters, pilot tubes, target meters, flow nozzles, venturi tubes, elbow-tap meters and orifices and flow tubes. A few types of positive displacement meters are rotary-vanes, pistons, nutating-disks and oval-gears. The turbine, electromagnetic, vortex shielding and sonic designs are all types of velocity meters. Thermal and Coriolis are types of mass meters.

The liquid flow measurements are open, usually involving flumes and weirs. It is essential to measure the flow of liquids in many industrial plants. Inaccurate flow measurements can cause major problems. For the measurement of liquid flow instruments, the flow rate is calculated by measuring the velocity of the liquid and change in kinetic energy. There are several types of mechanical flowmeters such as the bucket-and stopwatch flowmeter, piston flowmeter, variable area meter, turbine flowmeter, Woltmann meter, single jet meter, paddle wheel meter, multiple jet meter, Pelton wheel, oval gear meter, and nutating disk meter. Light is used by optical flowmeters to determine flow rate. The magnetic flowmeters, ultrasonic flowmeters and the Coriolis flowmeters are differents kinds of modern flowmeters that are used to vary conditions, pressure, non-linearities, temperatures, and characteristics of the fluid.