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『Structure and principle of mass flowmeter』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)
1. How does the Coriolis mass flowmeter work? Based on the principle of vibration, the Coriolis mass flowmeter achieves high-precision measurement by directly measuring the fluid mass flow rate without temperature or pressure compensation. 1. The core working principle utilizes a U-shaped or straight measuring tube installed inside the sensor to generate fixed frequency vibrations. When fluid flows through a vibrating tube, Coriolis force (abbreviated as Coriolis force) is generated, which causes the measuring tube to undergo twisting deformation.
1. Inlet section: The fluid flow direction is opposite to the vibration direction, generating a reverse force. 2 Exit section: The twisting deformation caused by the phase difference between the fluid flow direction and the vibration direction, which generates the same directional force, is directly proportional to the mass flow rate of the fluid.
2. The signal detection system installs electromagnetic detectors at the inlet and outlet ends of the measuring tube.
1. The inlet detector records the initial vibration waveform.
2 The export detector records the waveform after being affected by Coriolis force The system accurately calculates the time difference between two signals (usually in microseconds), which directly corresponds to the mass flow rate value. 3. Data processing unit 1 Convert the detected time difference signal into a voltage signal 2 Calculate instantaneous mass flow and cumulative mass through built-in microprocessor Synchronized collection of temperature data (PT1000 temperature measurement) for compensating for changes in material elastic modulusIV. Technical characteristics 1 Directly measure mass flow rate with an accuracy o
2. Structure and principle of mass flowmeter
The volume of fluid is affected by temperature and pressure, and it is a dependent variable.
. In contrast, the mass of a fluid is a constant and unchanging quantity that does not vary with changes in the above conditions. In commonly used flow meters, such as orifice plates, laminar flow, turbines, vortex streets, electromagnetic, rotor, ultrasonic, and elliptical gears, they measure the volumetric flow rate of fluids. However, in practical applications such as scientific research, production control, and quality management, people often pay more attention to the quality and flow rate of fluids. In the early days, we could only indirectly obtain the mass flow rate by measuring parameters such as temperature, pressure, and density of the limb mass, and then through tedious corrections and conversions. This method was both cumbersome and difficult to ensure the accuracy of the measurement. Fortunately, with the advancement of technology, methods and devices for directly measuring mass flow have emerged, injecting new vitality into the development of flow measurement technology. The mass flowmeter adopts the principle of thermal sensing measurement, which accurately measures the flow rate by sensing the heat carried away b