The classification of flow measuring method

Abstract: the classification of flow measuring method of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. The measurement method of flow a lot. Its measuring principle and measuring instrument used, the structure form of each are not identical. There are many classification of flow measurement method. This book only for a person to taxonomy. Introduction is as follows: ( 1) Flow velocity type site meter which is a kind of to measure the fluid. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the classification of flow measuring method for details. The measurement method of flow a lot. Its measuring principle and measuring instrument used, the structure form of each are not identical. There are many classification of flow measurement method. This book only for a person to taxonomy. Brief introduction is as follows: ( 1) Speed type flow site meter which is a kind of to measure the fluid flow in the pipe as the basis to calculate the flow meter. Because if known by flow cross-section of the circulation of A body, so as long as the measured velocity v of the fluid, fluid volume flow Q = vA can be obtained. Based on the principle of the speed of flow measuring instrument can be divided into two work modes: one is direct measure the rate of flow of fluid velocity measuring instrument, such as electromagnetic flowmeter, ultrasonic flowmeter, related flow meter, etc. The characteristics of this way of working is not set in the pipe detecting element. So that it can't be change the flow of the fluid, also won't produce the pressure loss. There is no more problems such as blockage. Another way to work, is by setting the detection transformation components (in the pipe Such as orifice plate, float, turbine, etc. ) 。 Will be flow body transforms velocity according to certain functional relation of differential pressure, displacement, speed, frequency signal, thus to indirectly measure zui traffic. According to this way of working flow rate measurement site meter site main differential pressure flow meter, flow meter, turbine flowmeter, vortex flowmeter, the target flowmeter, etc. （ 2) Volumetric flowmeter which is a kind of fluid in unit time produced as a measurement basis to calculate the number of the fixed volume of flow instrument of m. Such as the oval gear flowmeter, piston type flowmeter, waist wheel flowmeter, circular flow meter, etc. （ 3) Mass flowmeter which is a kind of on the basis of the qualitative J M to measure the fluid through the flowmeter. According to the flow and the relationship between the volume flow of mass m ( Type ( （ 2 - 3 - 2) ） The speed type ( Or displacement) Flow site measuring instrument to measure volume flow ( Or the total volume) , is then multiplied by the current body density, can be obtained by qualitative site traffic ( Or total quality) 。 Based on the principle of indirect measurement of mass flow meter, called derived type ( Indirect) Mass flowmeter. Due to the medium density will change along with the change of pressure, temperature, therefore widely used in industry derivated mass flowmeter is usually adopt measures to the automatic compensation of temperature and pressure. In order to make the measured mass flow rate value is not affected by the fluid pressure, temperature, viscosity and other changes in a direct measurement of fluid mass flow rate of direct mass flowmeter are under development. For example, thermal mass, angular motion coriolis force to basin type, gyro type and type, etc. Among them, the thermal mass flowmeter has got application in industry. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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