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1. What is the unit of CMF? CMF is not a unit, but an abbreviation for Coriolis Mass Flowmeter. The working principle of Coriolis mass flowmeter: vibrating tube structure: The main structure of Coriolis mass flowmeter is usually composed of two U-shaped tubes arranged side by side. The bent parts of these two pipes will vibrate towards each other, and the straight pipes on both sides will also vibrate accordingly. Fluid Introduction: When fluid is introduced into a pipe and flows forward along it, the pipe forces the fluid to vibrate up and down together with it. This vibration generates a Coriolis force proportional to the mass flow rate of the fluid. Characteristics of Coriolis mass flowmeter: Direct measurement: Coriolis mass flowmeter can directly measure the mass flow rate of fluid without the need for correction of parameters such as density, temperature, or pressure. High precision: Due to its unique working principle, Coriolis mass flowmeter can provide high-precision measurement results, suitable for various fluid media and flow ranges. Wide applicability: Coriolis mass flowmeter can be used to measure the mass flow rate of various fluid media such as gas and liquid, and is widely used in fields such as petroleum, chemical, power, metallurgy, etc. In summary, CMF, as an abbreviation for Coriolis mass flowmeter, plays an important role in the field of fluid measurement. Its high precision and wide applicability make it an indispensable tool in industrial measurement. 2. 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
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 currently the most mainstream type, but the pressure loss is relatively large. Main advantages and limitations: direct measurement of mass flow rate, extremely high accuracy (up to ± 0.1%); Can simultaneously measure fluid density and tempe
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