Coriolis Mass Flowmeter, also known as a Coriolis force flowmeter, is a device that directly measures mass flow by utilizing the principle of Coriolis force that is proportional to the mass flow rate when a fluid flows in a vibrating pipeline. It consists of a flow detection element and a converter. The Coriolis mass flowmeter enables direct measurement of mass flow rate, with high accuracy, the ability to measure multiple media and multiple process parameters, and is widely used in industries such as petrochemicals, pharmaceuticals, and food.

Classification of mass flow meters:

1. Thermal mass flowmeter
   Thermal mass flow meters use the principle of heat conduction for measurement, which transfers heat into the fluid and measures the velocity and temperature changes of the fluid along the pipeline to obtain the flow rate value. Thermal mass flow meters are suitable for measuring low flow rates, viscous liquids, and high flow rate gases.
2. Thermistor based mass flowmeter

Thermistor based mass flow meters utilize the temperature dependent resistance of conductive materials to measure flow rate by measuring resistance and temperature in the fluid. It is suitable for measuring liquids and gases with low viscosity and is commonly used in industrial fields such as petroleum, chemical, and food.

3. Volume rotary mass flowmeter

The volumetric rotary mass flowmeter links the measured fluid displacement with the measured fluid mass, obtains the fluid mass by rotating the volumetric measuring cup, and determines the flow rate value based on time. The volumetric rotary mass flowmeter is widely used in automatic control.

4. Mass rotary mass flowmeter

The mass rotary mass flowmeter utilizes the principle of Newton’s law to measure mass flow by applying centrifugal force on a rotating body. It is usually used for measuring the flow rate of liquids.

Among numerous flow tube shapes, U-shaped and triangular conduits occupy important positions in the industrial field due to their unique characteristics. This article will explore in detail the differences between U-shaped mass flow meters and triangular conduits, in order to provide readers with a deeper understanding.

Firstly, let’s take a look at the U-shaped catheter. U-shaped conduits play an important role in mass flow meters due to their unique structural characteristics. Its two open ends are fixed, allowing fluid to flow in and out, which makes the U-shaped conduit highly stable in fluid measurement. At the same time, the top of the U-shaped conduit is equipped with an electromagnetic excitation device, which can drive the U-shaped conduit to vibrate at its natural frequency, causing the fluid inside the conduit to move vertically along the measuring tube while flowing along the pipeline. This type of motion causes the fluid to be subjected to Coriolis forces, resulting in torsional deformation and achieving high-precision mass flow measurement.

In addition, U-shaped catheters perform well in overcoming external vibration interference. Due to its unique bend design, it can reduce the rigidity of the flowmeter pipeline, increase the stroke, thereby increasing the phase difference and improving measurement accuracy. Meanwhile, compared to straight or slightly curved flow tubes, U-shaped conduits can use thicker tubes under the same rigidity conditions, which reduces relative wear and improves the product’s service life. However, U-shaped conduits also have some shortcomings, such as large volume, high cost, and heavy weight, which to some extent limit their application in certain specific situations.

As a type of micro curved flow tube, triangular conduits have the advantages of small volume, light weight, and low cost, which makes them widely applicable in some cost sensitive or space limited situations. At the same time, the triangular conduit is convenient for transportation and installation, reducing the cost of use. However, due to its high rigidity, difficulty in starting vibration, and difficulty in achieving high accuracy, this to some extent affects its measurement accuracy.

In terms of application scenarios, U-shaped catheters are more suitable for situations that require high measurement accuracy, such as trade handover, due to their high precision, high stability, and strong anti-interference ability. Triangular conduits are more suitable for internal pipe networks that require measurement monitoring within the factory, where precision is relatively low but cost and space requirements are high.

The U-shaped and triangular conduits of mass flow meters each have their own characteristics and application scenarios. U-shaped conduits have advantages in high-precision measurement scenarios due to their high precision, high stability, and strong anti-interference ability, while triangular conduits have shown a wide range of application prospects in cost sensitive or space limited scenarios due to their small size, light weight, and low cost. In practical applications, we should choose the appropriate catheter type based on specific needs and scenarios to achieve the best measurement results.

Application of Quality Flow Meter:

1. Chemical industry

The chemical industry requires measuring the mass flow rate of liquids or gases to control and regulate processing processes. The commonly used mass flow meters include volumetric rotary and thermal mass flow meters.

2. Food

The food industry needs to measure the mass flow rate of fluids to ensure product quality and stability during processing. The commonly used mass flow meters include volumetric rotary and thermistor mass flow meters.

3. Oil

The petroleum industry requires measuring the mass flow rate of oil and natural gas to manage production and pipeline transportation. The commonly used mass flow meters include volumetric rotary and thermal mass flow meters.

4. Sewage treatment

Wastewater treatment requires measuring the mass flow rate of fluids and controlling the flow rate of fluids in order to achieve water recycling and control environmental pollution. The volumetric rotary mass flowmeter is a common measurement method.

In short, mass flow meters play an important role in many industries such as manufacturing, chemical, food, medical, and environmental protection. Different mass flow meters are suitable for different fluid conditions and measurement requirements.