What are the importance of fluid flow measurement devices?
Fluid flow measurements are necessary in a very wide range of applications from the control of fuel flow in engine management systems to the regulation of drug delivery in ventilators. Fluid flow measurements involve determination of the flow velocity, the mass flow rate or volumetric flow rate.
What is the purpose of flow meter?
A flow meter is a device used to measure the volume or mass of a gas or liquid. Flow meters are referred to by many names, such as flow gauge, flow indicator, liquid meter, flow rate sensor, etc. depending on the particular industry.
Who invented flow meter?
David M. Potter 3d, an inventor, explorer and founder of the Potter Aeronautical Corporation of Union, N.J., died on Sept. 29 at Warren Hospital in Phillipsburg, N.J. He was 79 years old and lived in Martinsville, N.J. He invented a flow meter that measured the flow of liquids.
How is fluid flow measured?
A pitot tube is used to measure fluid flow velocity. The tube is pointed into the flow and the difference between the stagnation pressure at the tip of the probe and the static pressure at its side is measured, yielding the dynamic pressure from which the fluid velocity is calculated using Bernoulli’s equation.
How is Bernoulli’s principle used to measure the flow rate?
The principle behind the operation of the Venturi flowmeter is the Bernoulli effect. The Venturi measures a fluid’s flowrate by reducing the cross sectional flow area in the flow path and generating a pressure difference. The fluid now enters the throat of the Venturi with a new area A2, which is smaller than A1.
What instrument is used to measure the rate of fluid flow?
flow meter
A flow meter (or flow sensor) is an instrument used to measure linear, nonlinear, mass or volumetric flow rate of a liquid or a gas.
What is the working principle of magnetic flow meter?
Magnetic flowmeters work based on Faraday’s Law of Electromagnetic Induction. According to this principle, when a conductive medium passes through a magnetic field B, a voltage E is generated which is proportional to the velocity v of the medium, the density of the magnetic field, and the length of the conductor.
What are the reasons of importance of flow measurement Why is it essential to know?
Measurement of flow, whether it is a liquid or gas, is commonly a critical parameter in many processes. In most operations it is important to know that the right fluid is at the right place at the right time. Some critical applications require the ability to conduct accurate flow measurements to ensure product quality.
Which meter gives direct reading of flow of fluids?
Explanation: Rotameter: Rotameter is a constant pressure drop variable area flowmeter. It measures the flow rate of liquid or gas.
What is liquid flow meter?
A liquid flow meter is a device used to measure the volumetric, mass, nonlinear and linear flow rate of a liquid. The flow rate is calculated by measuring the liquid’s velocity. The type selected will depend on the application and type of liquid.
What is volumetric flow meter?
A volumetric flow meter is an instrument which can measure either directly or indirectly the volume of a substance which is passing through a specific location in a set period of time. There are many different units used for measuring volumetric flow rate.
What is a fluid flow meter?
A Flow meter is a device used to measure the rate of fluid movement at a given point in the pipe or tube. The flow meter is usually secured to a break in the pipe and the fluid is allowed to move through it. Types of Fluid Flow meters: Several methods are employed to classify flowmeters.
What is the history of fluid flow measurement?
FLUID FLOW MEASUREMENT. Flow measurement has a history of about 3000 years. It has been studied only in the last 200. years and in the last 30 years all the new techniques have evolved. There is now a wide variety of. methods available to measure the flow of liquids, solids, gases and vapours.
How does a thermal mass flowmeter work?
The thermal mass flowmeter operates independent of density, pressure, and viscosity. Thermal meters use a heated sensing element isolated from the fluid flow path where the flow stream conducts heat from the sensing element. The conducted heat is directly proportional to the mass flow rate and the temperature difference is calculated to mass flow.
How does a flowmeter work?
This form of flowmeter divides up the flowing fluid into known volume packets. These measurement devices trap a known volume of fluid and allow it to pass from meter inlet to outlet. The number of trapped volumes passing through the meter is counted to obtain the total flow.