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Guide the electromagnetic flow meter scale installation

Abstract: to guide the installation of electromagnetic flow meter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. 1 the types of flow measurement instrument and advantages and disadvantages of so far, which can be chosen by the industrial flow meter type was more than 60 species. Varieties because so many have yet to find a way to for any fluid type, range, and flow state. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a guide of electromagnetic flow meter scale installation article details. 1 the types of flow measurement instrument and advantages and disadvantages of so far, which can be chosen by the industrial flow meter type was more than 60 species. Varieties because so many have yet to find a way to for any fluid type, any range, any flow state and the flow of any conditions of use are applicable test instrument. These flow meters, each product has its specific scope, but also has its limits. The flow measurement instrument according to the principle of measuring points and strong principle principle, thermology, acoustics, electricity principle, optical principle, the principle of atomic physics, etc. According to the current popular zui, zui broad classification, can be divided into: differential pressure flowmeter, displacement meter, flow meter, turbine flowmeter, electromagnetic flowmeter, fluid vibration flowmeter, ultrasonic flowmeter and mass flowmeter and open channel flow meter. The advantages and disadvantages of various flowmeter and main application areas are shown in table 1 ( Because of the mass flowmeter sort is more, each other have different advantages and disadvantages and application scope and therefore not listed in the table) :( Fluid mechanics in the characterization of viscosity influence the similarity criterion of the Re. Re=ρ 六世/μ ρ; μ; Is the fluid density and viscosity, v, L for flow field characteristic length and velocity of small Reynolds number, means that the fluid flow in the viscous force between particles dominate, fluid particle flow parallel to the pipeline wall regularly, a laminar flow state. Reynolds number is large, occupied the main position means that the inertia force, the fluid is turbulent flow state) 2 electromagnetic flowmeter measurement principle according to Faraday's law of electromagnetic induction, when the conductor in magnetic field movement cutting lines, will produce inductive electromotive force e at opposite ends of a conductor, the direction to be determined by the right-hand rule, its size and the magnetic induction intensity of the magnetic field B, effective length L and conductors of conductor in magnetic field perpendicular to the magnetic field is proportional to the speed of movement of the u. If perpendicular to each other, L, u, B is: e = BLu similarly, if in the uniform magnetic field of magnetic induction intensity for B, perpendicular to the direction of the magnetic field with a diameter of D is not permeable pipe, when conducting liquid in the pipe with velocity u movement, conductive liquid cutting lines, and if in the pipe cross section perpendicular to the magnetic field on both sides of the diameter of the installation of a pair of electrodes ( As shown in figure 1) 。 Can be proved that the velocity distribution for as long as the pipe and the axial symmetry distribution, will produce inductive electromotive force between two electrodes: e = kBD ū type of ū for average flow velocity on the pipe cross section, m/s) ; K is a constant coefficient, dimensionless; D is sounding pipe diameter ( m) ; B is the magnetic induction intensity ( T) 。 The available volume flow through pipes: by type, on when the measuring tube structure must, volume flow qv is proportional to the ratio of e/B, and has nothing to do with the fluid state and physical parameters, measuring the ratio of e/B can be qv volume flow value. When the magnetic induction intensity B is constant, the volume flow rate qv is proportional to the induced electromotive force e. B is a dc magnetic field or sine wave ac magnetic field, or other types of magnetic induction intensity of magnetic field. It is provided by the excitation system of electromagnetic flowmeter. Excitation system can provide a variety of forms to electromagnetic flow sensor magnetic field waveform. Different magnetic field waveform, directly determine the characteristics of electromagnetic flow sensor working magnetic field, also largely determines the electromagnetic flowmeter flow signal processing method, has a great influence on electromagnetic flowmeter work performance. 3 electromagnetic flowmeter field application data and analysis in wanbei coal and electricity group west coal gangue zhu set well the ground grouting construction field, electromagnetic flowmeter metering clay slurry flow field test. During the trial of clear water and the ratio of three kinds of clay cement grout experiment. The proportion of water is 1. 00 g/cm3, the proportion of three kinds of clay cement grout 1 respectively. 21g/cm3、1. 33 g/cm3 and 1. 39g/cm3。 Due to the electromagnetic flowmeter measuring water flow technology has been very mature, so in the process of test at the time of electromagnetic flowmeter measuring water flow velocity as a standard data, measurement data of clay cement grout and its comparison, to determine its measurement accuracy. In use in the test process of grouting pump, quantity of 99 l/min; Grouting pipe when testing for opening without pressure; The test time is 65 min, sampling interval of 5 min. The specific test data are shown in table 2. Four groups of data contrast curve is shown in figure 2. Through the test data analysis of average instantaneous water flow rate of 1. 327 m/s, the proportion of 1. 21 g/cm3 clay slurry, on average, the instantaneous flow rate of 1. 31m/s; The proportion of 1. 33 g/cm3 clay slurry, on average, the instantaneous flow rate of 1. 324m/s; The proportion of 1. 39 g/cm3 clay slurry, on average, the instantaneous flow rate of 1. 323 m/s, and water in - average instantaneous velocity errors 0. 232% ~ - 1. 304%.

come in many forms, like fork density meter manufacturer and coriolis density meter, and they all provide efficient solution for our rosemount coriolis mass flow meter needs.

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Before investing in a coriolis mass flow meter emerson mass flow meter, it can benefit to have an understanding of the different types of and the most effective strategies to v shape coriolis mass flow meter. Go to Sincerity Flow Meter for more tips.

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