What does FL0wMETER mean in Chinese? | Thermal flow meter

Flow Meters – Silver Automation Instruments

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1. Overview of Flow Meter

The English name of a flow meter is flowmeter, which is defined by the National Science and Technology Terminology Review Committee as an instrument that indicates the measured flow rate and/or the total amount of fluid within a selected time interval. Simply put, it is an instrument used to measure fluid flow in pipelines or open channels. The commonly used unit in engineering is m3/h. It can be divided into instantaneous flow rate (Flow Rate) and cumulative flow rate (Total Flow). Instantaneous flow rate refers to the amount of effective cross-section that passes through a closed pipeline or open channel per unit time, and the substances flowing through can be gas, liquid, or solid; Accumulated flow refers to the cumulative amount of fluid flowing through the effective cross-section of a closed pipeline or open channel during a certain time interval (one day, one week, one month, one year). The cumulative flow rate can also be obtained by integrating the instantaneous flow rate with time, so the instantaneous flow meter and the cumulative flow meter can also be converted into each other.

2. What is the name of a flowmeter?

Electromagnetic flowmeter is a flowmeter that measures flow based on Faradays law of electromagnetic induction.

. The advantages of electromagnetic flowmeter are minimal pressure loss and a wide range of measurable flow rates. The ratio of high flow rate to low flow rate is generally above 20:1, suitable for a wide range of industrial pipe diameters, up to 3m. The output signal is linear with the measured flow rate, with high accuracy. It can measure the fluid flow rate of acid, alkali, salt solutions, water, sewage, corrosive liquids, as we

ll as mud, slurry, pulp, etc. with conductivity ≥ 5 μ s/cm. But it cannot measure the flow of gas, steam, and purified water. When a conductor cuts magnetic field lines in a magnetic field, an induced potential is generated in the conductor, and the magnitude of the induced potential is proportional to the effective length of the conductor in the magnetic field and the speed at which the conductor moves perpendicular to the direction of the magnetic field. Similarly, when a conductive fluid flows vertically in a magnetic field and cuts magnetic induction lines, it will also generate induced potentials on the electrodes on both sides of the pipeline. The direction of the induced potential is determined by the right-hand rule, and the magnitude of the induced potential is determined by the following equation: Ex=BDv -- -- -- -- -- -- -- -- -- Equation

(1). In the formula, Ex - induced potential, V; B - magnetic induction intensity, TD - inner diameter of the pipeline, mv - average flow velocity of the liquid, m/s。 However, the volumetric flow rate qv is equal to the product of the fluid velocity v and the pipeline cross-sectional area (π D)/4. Substituting equation

(1) into this equation yields: Qv=(π D/4B) * Ex - - - - - - Equation

(2). As can be seen from the above equation, when the diameter D of the pipeline is fixed and the magnetic induction intensity B remains constant, the measured volume flow rate is linearly related to the induced potential. If an electrode is inserted on each side of the pipeline, an induced potential Ex can be introduced, and the magnitude of this potential can be measured to obtain the volumetric flow rate. According to Faradays principle of electromagnetic induction, a pair

What does FL0wMETER mean in Chinese? | Thermal flow meter

1. Overview of Flow Meter

2. What is the name of a flowmeter?

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