Legend of Electromagnetic Flow Meter

『Legend of Electromagnetic Flow Meter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

1. Principles and dynamic diagrams of commonly used flow devices in water companies. The flow devices commonly used in water companies are mainly divided into two categories: water meters for trade settlement and flow meters for pipeline networks. The following is an overview of the principles and corresponding dynamic diagrams of these two types of devices.

1. Working principle of trade settlement water meter rotor type water meter: Water enters the case through the water inlet of the water meter, passes through the water filter net, and impacts the impeller to start rotating.

. The water flows out from the upper outlet hole of the impeller box, and at the same time, the impeller drives the upper central gear and transmission gear to rotate through the central shaft, which in turn drives the pointer on the dial to rotate clockwise and start measuring. Dynamic diagram: Equipment features: Suitable for residential billing with DN15 caliber, cheap price, but susceptible to scale and water pressure changes, and may experience non flowing water rotation phenomenon. Working principle of spiral wing water meter (horizontal and vertical): After water flows into the water meter, it impacts the spiral wing shaped impeller and rotates before flowing out. The rotational speed of the impeller is proportional to the water flow velocity, and after being driven by a reduction gear, the total amount of water passing through the water meter is displayed on the indicator device. Equipment features: Suitable for measuring diameters from DN80 to DN200, with small flow capacity and pressure loss, and can be installed and maintained without stopping water supply. Image: Working principle of volumetric water meter: It measures the actual volume of fluid passing through the water meter. Every time the fluid rotates a certain angle, it passes through the water meter to the other side, making the measurement more accurate. Equipment features: Generally used in precision manufacturing enterprises or testing sites, it is expensive and the water quality in China is generally hard, making it easy for scale to clog the water meter. Image: Working principle of electromagnetic water meter: based on Faradays law of electromagnetic induction. By cutting the internal magnetic field lines through the conductor inside the electromagnetic water meter, an induced electromotive force is generated, and then the direction of transmission of the internal current in the tube under the action of the induced electromotive force generated by the conductor is measured. Equipment features: small initial flow rate, no mechanical components in the diameter, no pressure loss, more expensive than mechanical meters, but maintenance free. Image:

2. Pipeline flowmeter Electromagnetic flowmeter Working principle: Based on Faraday electromagnetic induction to determine the car law. The conductive medium inside the measuring tube is equivalent to a conductive metal rod in Faradays test. When a conductive medium flows through, an induced voltage is generated, and the flow rate is measured by measuring this voltage. Equipment features: Equipped with a bidirectional measurement system, the sensor requires a short straight pipe section, with low pressure loss, and the measurement is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity. Dynamic diagram: The working principle of the plug-in ultrasonic flowmeter is that when the direction of s

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