The principle and application of the classification of the flowmeter

Abstract: the principle and application of the classification of the flowmeter information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. A, the classification of flow meter according to the principle of measurement, are: the principle of mechanical, thermal, acoustic principle, principle of principle of electrical, optical, atomic physics, and etc. According to the principle of the structure of the flow meter, can be divided into: volumetric flowmeter, differential pressure flowmeter, float-type flowmeter,. More flow meter manufacturers choose model price quote you are welcome to inquire, the principle and application of the following is the classification of the flowmeter article details. A, the classification of flow meter according to the principle of measurement, are: the principle of mechanical, thermal, acoustic principle, principle of principle of electrical, optical, atomic physics, and etc. According to the principle of the structure of the flow meter, can be divided into: volumetric flowmeter, differential pressure flowmeter, float-type flowmeter, turbine flowmeter, electromagnetic flowmeter, fluid oscillation flowmeter in the vortex flowmeter and mass flowmeter, insert type flowmeter and probe flowmeter. 2. The working principle and application of commonly used flowmeter 1. Differential pressure flowmeter is a kind of differential pressure flowmeter, according to the flow detector installed in the pipeline of differential pressure, fluid conditions of known and detector and flow volume to calculate the total size of the instrument. Purpose: differential pressure flowmeter is widely applied in the closed conduit flow measurement, such as fluid: single phase, mixed phase, clean, dirty, viscous flow: atmospheric pressure and high pressure, vacuum, normal temperature, high temperature, low temperature, etc. Diameter: from a few millimeters to several meters; Traffic: subsonic and sonic, pulsating flow and so on. In the use of it in each industrial sector accounted for about a quarter of the total usage meter ~ 1/3. 2. Float float flowmeter of the flow meter, also known as the rotor flowmeter, it is a kind of variable area flow meter. In the extended vertical taper pipe from bottom to top, circular cross section shall be borne by the fluid dynamics, the gravity of the float so can float freely in the cone tube. Purpose: float flowmeter is the most widely used after differential pressure flowmeter flowmeter, especially in the small flow and micro flow occasions. 3. Volumetric flowmeter volume flowmeter, also known as constant displacement meter, or simply the PD flowmeter, is one of the most accurate flow meter. It will use mechanical measuring element fluid continuously into a single known volume parts, and according to the measuring chamber repeat filling and discharge of this part of the fluid volume number to measure the total volume of the fluid. Purpose: volumetric flowmeter, differential pressure type flowmeter and float flowmeter is listed as most utilized three kinds of flowmeter, often used for measuring the expensive medium ( Oil, gas, etc. ) The total amount of. ) 。 4. Turbine meter turbine flowmeter is the main type of speed meter, its use more rotor blades ( Turbine) To sense the current body of average flow velocity and flow rate or amount. Generally speaking, it consists of two parts: sensor and display instrument, or can be integrated. Purpose: turbine flowmeter is widely used for measuring oil, organic liquid and inorganic liquid, liquefied gas, natural gas and fluid in low temperature. 5. Electromagnetic flowmeter is a kind of electromagnetic flowmeter based on Faraday's law of electromagnetic induction measuring instrument of conductive liquid. Applications: electromagnetic flowmeter with a series of excellent properties, can solve the problem of other flow meter is not easy to apply, such as the pollution flow and corrosive flow measurement. Electromagnetic flowmeter is widely used in water supply and drainage engineering, most of large diameter instrument used in water supply and drainage engineering. Small and medium caliber is usually used in high demand or unpredictable situations, such as the steel industry cooling water control of blast furnace tuyere, the pulp and black liquor of papermaking industry measurement, the chemical industry's strong corrosive liquids and non-ferrous metallurgical industry of the pulp. Small and small diameter is often used in pharmaceutical, food hygiene, biochemical and other places. 6. Vortex street flowmeter vortex flowmeter is a kind of fluid in the place the instrument of streamlined vortex generator, fluid separation and release two alternately on both sides of the generator series rules of vortex generator. When the flow at constant cross section, the flow and the forerunner of volume flow rate is proportional to the. Therefore, the flow can be measured by measuring the oscillation frequency. Application: vortex flowmeter is developing rapidly, has now become the general flow meter. 7. Ultrasonic flowmeter ultrasonic flowmeter is based on the speed of ultrasonic wave propagation in a flow medium speed is equal to the average velocity and acoustic measured medium itself geometry and the principle of design. It also reflect the velocity by measuring the velocity. According to the principle of measurement, the ultrasonic flowmeter can be divided into the time difference and doppler. Application: the travel time method suits for single-phase liquid and gas. Typical applications include factory emissions liquid, strange, liquefied natural gas (LNG), etc. In terms of gas application, with good experience in the area of high pressure gas; Doppler method is suitable for the low content of heterogeneity of two-phase fluid, such as untreated sewage, waste water and dirty factory fluid, but usually does not apply to very clean liquid.

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