Analysis of several common flow meter concepts and their working principles

Abstract: Analysis of several common flow meter concepts and their working principle information is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. Analyze several common flowmeter concepts and how they work Basics and comparisons of several common flowmeters; differential pressure flowmeters (DP) are the most common flow technology, including orifice plates, venturis, and sonic nozzles. DP flow meters can be used to measure most liquids. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is an analysis of several commonly used flowmeter concepts and their working principles. Analysis of several common flowmeter concepts and their working principles Basic knowledge and comparison of several common flowmeters; Differential pressure flowmeters (DP) are the most common flow technology, including orifice plates, venturis, and sonic nozzles. DP flow meters can be used to measure the flow rate of most liquids, gases and steam. DP flow meters have no moving parts, are versatile and are easy to use. But when clogged, it creates a pressure loss that affects accuracy. The accuracy of flow measurement depends on the accuracy of the pressure gauge. This article makes a simple comparison of some common flow meters, and you are welcome to make additional discussions. Differential Pressure Flowmeter (DP) This is the most common flow technology and includes orifice plates, venturis, and sonic nozzles. DP flow meters can be used to measure the flow rate of most liquids, gases and steam. DP flow meters have no moving parts, are versatile and are easy to use. But when clogged, it creates a pressure loss that affects accuracy. The accuracy of flow measurement depends on the accuracy of the pressure gauge. Positive Displacement Flowmeter (PD) PD flowmeter is used to measure the volume flow rate of liquid or gas, it introduces the fluid into the metering space and counts the number of revolutions. Impellers, gears, pistons or orifice plates etc. are used to divide the fluid. PD flow meters are highly accurate and are one of several methods for measuring viscous liquids. But it also creates unrecoverable pressure errors and requires moving parts. Turbine Flowmeter When fluid flows through a turbine flowmeter, the fluid rotates the rotor. The rotational speed of the rotor is related to the velocity of the fluid. The flow or total is derived from the average flow rate of the fluid felt by the rotor. Turbine flow meters accurately measure clean liquids and gases. Like PD flowmeters, turbine flowmeters also produce unrecoverable pressure errors and also require moving parts. Electromagnetic flowmeter When a conductive fluid flows through an electromagnetic field, the velocity of the fluid can be obtained by measuring the voltage. Magnetic flow meters have no moving parts and are not affected by fluids. Conductive liquids are measured with high accuracy when the tube is full. Electromagnetic flow meters can be used to measure the flow rate of slurry fluids. The ultrasonic flowmeter propagation time method and the Doppler effect method are commonly used methods for ultrasonic flowmeters to measure the average velocity of the fluid. Like other velocity meters, it is a meter that measures volumetric flow. It is an unobstructed flowmeter, and if the ultrasonic transmitter is installed outside the pipeline, it does not need to be inserted. It is suitable for almost all liquids, including slurries, with high precision. But the contamination of the pipes can affect the accuracy. Vortex flowmeter The vortex flowmeter is to place a bluff vortex generator in the fluid, and the speed of the vortex is proportional to the speed of the fluid, so as to calculate the volume flow. Vortex flowmeters are suitable for measuring liquids, gases or steam. It has no moving parts and no dirt issues. Vortex flowmeters are noisy and require high fluid velocity to create vortices. Thermal mass flow meters measure fluid velocity by measuring an increase in the temperature of the fluid or a decrease in thermal sensor. Thermal mass flow meters have no moving parts or holes and can accurately measure the flow of gas. Thermal mass flow meters are one of the few technologies that can measure mass flow, and are also one of the few technologies used to measure large-bore gas flow. Coriolis flowmeter This flowmeter uses a vibrating fluid tube to create a deflection corresponding to mass flow to measure. Coriolis flowmeters can be used to measure the mass flow of liquids, slurries, gases or steam. High accuracy. However, regular maintenance of the pipe wall is required to prevent corrosion. Electromagnetic flowmeter measurement principle: Faraday's law of electromagnetic induction proves that a conductor moving in a magnetic field will induce an electric potential. Using the principle of electromagnetic measurement, the fluid is a conductor in motion. The induced potential is proportional to the flow rate and is detected by the two measuring electrodes, and then the transmitter amplifies it, and calculates the flow rate according to the cross-sectional area of ​​the pipe. quotations, etc. 'Analyze the Concepts and Working Principles of Several Commonly Used Flow Meters'

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