『Principle of bend tube 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. Working principle of mass flowmeter
The mass flowmeter directly measures the mass of the fluid based on the principle of Coriolis force, and calculates the accurate mass flow value by detecting the phase difference or frequency change generated by the U-shaped tube under the action of fluid flow. The core principle of a Coriolis Mass Flowmeter is the Coriolis effect. When a fluid flows through a vibrating measuring tube, a Coriolis force proportional to the mass flow rate is generated. This force will cause the measuring tube to twist, and the mass flow rate of the fluid can be directly calculated by detecting this twisting amount (usually manifested as the phase difference or time difference between the inlet and outlet), without the need for pressure and temperature compensation like a volumetric flow meter.
2. Key components and workflow drive coils: generate alternating electromagnetic force to continuously vibrate the measuring tube at its natural frequency. Measuring tube: usually U-shaped, Ω - shaped, or straight tube shaped, it is the channel and core sensitive component of the fluid. Sensor: located on the inlet and outlet sides of the measuring tube, used to detect the phase change of vibration on both sides. Transmitter: Receive the signal from the sensor, calculate the phase difference (Δ t) and convert it into mass flow rate and density values
3. The main technical types are mainly divided into two types based on the shape and vibration mode of the measuring tube: straight tube type: low pressure loss, less prone to scaling, but relatively low sensitivity, commonly used for high flow measurement. Bend type (such as U-shaped pipe): high sensitivity and measurement accuracy, it is cur
2. Working principle of bend tube flowmeter! Calculation method of differential pressure coefficient
Flow meter using the principle of fluid centrifugal force: When an object moves in a circular motion, centrifugal force is generated. With a constant mass and circular radius of the object, the magnitude of the centrifugal force corresponds to the velocity of the object, and the same applies to fluid flow.. By passing the fluid through a circular bend and measuring the pressure difference between the inside and outside of the bend, the flow velocity can be obtained, and the flow rate value can be obtained accordingly. There are two types of flow meters that work based on this principle: bend tube flow meter and circular tube flow meter The flow formula of the bent pipe flowmeter is as follows: As can be seen from the formula, it is very troublesome to calculate without dedicated software, and the geometric
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