Coriolis mass flow meter is a commonly used flow meter that can be used to measure the mass flow rate and density of various fluids. The structure of the Coriolis mass flow meter is complex and consists of multiple parts. This article will introduce the most important main components of a Coriolis mass flow meter, including sensors, electronic control units, pipes, valves, etc.

Sensor

The sensor is the core component of the Coriolis mass flow meter. It is used to detect the vibration frequency and phase difference of the fluid and transmit the signal to the electronic control unit for processing. The sensor is usually composed of a piezoelectric ceramic and a vibrating tube. The piezoelectric ceramic is subjected to the pressure of fluid vibration in the vibrating tube to generate an electric charge, which is then transmitted to the electronic control unit via a cable. The sensor has high precision, high sensitivity and stability, and can measure very small flow changes. Commonly used sensors include piezoelectric, thermal and magnetic sensors.

The sensor of the Coriolis mass flow meter is the core part of the measurement system. It can measure the vibration frequency and phase difference of the medium to calculate the flow rate and density. The design and manufacturing technology of the sensor have an important impact on the accuracy, stability and reliability of the Coriolis mass flow meter. This article will introduce in detail the principles, types and applications of sensors.

The principle of the sensor works based on the Coriolis effect principle. The Coriolis effect means that when fluid passes through a pipe of a certain shape and material, it will produce a certain vibration. This vibration is determined by factors such as the density, flow rate, and flow rate of the medium. Coriolis mass flow meter uses the resonance effect of the vibrating tube to calculate the flow rate and density by measuring the vibration frequency and phase difference of the medium.

Sensors usually consist of piezoelectric ceramics, vibrating tubes and cables. The piezoelectric ceramic is fixed above the vibrating tube. When the medium passes through the vibrating tube, the vibrating tube will vibrate, and the piezoelectric ceramic will be subjected to the pressure of the vibration of the medium and generate charges. By transferring the charge via a cable to an electronic control unit for processing, flow and density can be calculated.

Electronic control unit

The electronic control unit is another core part of the Coriolis mass flow meter. It is used to process the signal from the sensor and calculate the mass flow rate and density of the fluid. The electronic control unit usually consists of a microprocessor and a program controller, which can realize the collection, processing and display of measurement data.

The electronic control unit can automatically calibrate, automatically compensate and automatically correct errors, improving the accuracy and reliability of measurement. At the same time, it can also provide output signals for controlling other equipment or remote monitoring.

pipeline

The tubing is another important component of the Coriolis mass flow meter and is responsible for guiding the fluid through the measurement system. Parameters such as the length, diameter and material of the pipe have a great impact on the accuracy and stability of the measurement.

When selecting pipes, factors such as the corrosion resistance, pressure resistance, temperature range and physical properties of the fluid need to be considered. Generally speaking, the shorter the pipe, the smaller the diameter, and the higher the quality of the material, the higher the accuracy and stability of the measurement.

valve

Valves are another important component of a Coriolis mass flow meter and are used to control the flow and pressure of fluids. Valves are usually divided into two types: regulating valves and globe valves. Regulating valves are used to control the size and speed of flow, while globe valves are used to cut off the flow of fluids.

The selection of valves should be based on actual needs. Generally, factors such as valve type, material, size, pressure, etc. should be considered. When using valves, they need to be adjusted and controlled according to the characteristics and operating requirements of the fluid to ensure measurement accuracy and stability.

Other parts

In addition to the components introduced above, Coriolis mass flow meters also include cables, plugs, connectors, instrument panels, LCD screens and other auxiliary components. These components all play an important role and provide necessary support for the normal operation and maintenance of the Coriolis mass flow meter.

Summary

Coriolis mass flow meter is a flow meter with high precision, high stability and strong reliability. Its most important main components include sensors, electronic control units, pipes, valves, etc. These components work together to form the measurement system of the Coriolis mass flow meter, which enables simultaneous measurement of flow and density, providing necessary data support for industrial production and process control. In practical applications, it is necessary to select appropriate components according to the actual situation and perform correct installation and maintenance to ensure the normal operation and use of the Coriolis mass flow meter.