Vooluhulgamõõtur

A vooluhulgamõõtur, also known as a flow meter, is a device used to measure the volume or mass of a fluid that passes through a given cross-sectional area per unit of time. This measurement is crucial in many industrial and scientific applications for process control, monitoring, and billing.

There are various types of vooluhulgamõõturid, each operating on different principles. Some common types include:

Differential pressure flow meters, such as orifice plates, venturi tubes, and flow nozzles, which measure the pressure difference created by a constriction in the flow path.

Velocity-based flow meters, including turbine meters, vortex meters, and ultrasonic meters, which measure the speed of the fluid and then calculate the flow rate.

Positive displacement flow meters, which trap a fixed volume of fluid and count the number of times this volume is filled and emptied. Examples include gear meters and oval gear meters.

Electromagnetic flow meters, which utilize Faraday's law of induction and are suitable for conductive fluids.

Mass flow meters, such as Coriolis flow meters, which measure the mass flow rate directly by detecting the inertial forces on the fluid.

The choice of vooluhulgamõõtur depends on factors like the type of fluid (liquid or gas, its viscosity, corrosiveness), the required accuracy, the flow rate range, operating pressure and temperature, and cost considerations. Proper selection and calibration are essential for obtaining reliable flow measurements.