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『Measurement principle of mass flowmeter』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. Measurement principle of mass flow meter
A mass flow meter is an instrument that can directly measure the mass flow of a medium. It has the advantages of high measurement accuracy, good sensitivity, flexible use, and high reliability. Its measurement principle is as follows: Thermal measurement principle: The mass flow meter adopts a thermal measurement method to measure the flow rate by sensing the molecular mass carried away by fluid molecules. Specifically, when fluid flows through a sensor, the sensor measures the amount of heat absorbed or released by the fluid, and the change in heat is directly related to the mass flow rate of the fluid. Due to the fact that this measurement method is based on heat transfer characteristics, it is not affected by changes in gas temperature and pressure, and can provide stable and accurate measurement results. Multi parameter measurement and export function: The mass flow meter can not only directly measure the mass flow rate, but also measure the density of the medium, and indirectly measure the temperature of the medium through the correlation between density and heat transfer characteristics. Its transmitter is based on a microcontroller as the core, forming an intelligent instrument system that can export more than ten parameters (such as volume flow rate, concentration, etc.) for user use through built-in algorithms based on three basic measurement quantities: mass flow rate, density, and temperature. This multi parameter measurement capability significantly enhances the functionality and application flexibility of the instrument. The core value of automated production: In the process of automated production, mass flow meters provide key control parameters for che
2. Working principle of Coriolis mass flowmeter
Working principle of Coriolis mass flowmeter: Coriolis mass flowmeter is a high-precision instrument that uses the Coriolis effect (also known as Coriolis force) to measure the mass flow rate of a fluid.
. Its working principle is mainly based on Newtons second law and the principles of motion mechanics. When a fluid passes through a laterally constrained pipeline (i.e. the sensor of a Coriolis flowmeter), if the pipeline vibrates towards each other at its natural resonance frequency, the flow of the fluid inside the pipeline will generate a Coriolis force proportional to the mass flow rate of the fluid. This force will cause slight twisting deformation of the pipeline in the direction of fluid flow. Specifically, when there is no fluid flowing through, the vibrating tube does not twist, and the signals detected by the electromagnetic signal detectors on both sides of the vibrating tube are in phase. When there is fluid passing through, due to the Coriolis force, the vibration track sliding tube is twisted under the action of torque, resulting in a phase difference between the signals detected by t