Coriolis Mass Flow Meter is a highly accurate and direct instrument for measuring fluid mass flow. The following is a detailed introduction to Coriolis mass flowmeter:
Working principle
Coriolis mass flowmeters work based on the Coriolis force (Coriolis force for short) phenomenon, that is, when moving under a rotating reference frame, the object is subjected to a Coriolis effect generated by the force. When a fluid flows through a rotating pipe, it creates a lateral force proportional to the mass flow of the fluid, the Coriolis force. The instrument calculates the mass flow rate by measuring the Coriolis force generated by the fluid in a vibrating pipe. Specifically, the vibration tube inside the instrument vibrates in a reciprocating period under the action of excitation voltage, and when the fluid flows through the vibration tube, Coriolis force effect will be generated on the wall of the tube, so that the vibration tube will have torsional vibration. Detection coils installed at both ends of the vibration tube record this vibration and calculate the mass flow of the fluid from the phase difference.
Constituent structure
Coriolis mass flowmeter is mainly composed of sensor and transmitter. The sensor part includes two parallel flow tubes, a driving coil, a detecting coil and other components. The transmitter is responsible for providing the excitation voltage, receiving and processing the signal of the detection coil, and output the measurement results such as mass flow rate.
Advantages and characteristics
- High precision measurement: Coriolis mass flowmeter can provide very accurate flow measurement results, the error is usually in a small range, especially suitable for high measurement accuracy requirements.
- Direct measurement of mass flow: The instrument directly measures the mass flow of a fluid without the need to measure volume flow and calculate it in combination with fluid density, so it is not affected by changes in fluid temperature, pressure and density.
- Wide range ratio: Coriolis mass flowmeters can maintain high precision measurement over a wide flow range, from very small flow to very large flow.
- Suitable for a wide range of fluids: The instrument is capable of measuring a wide range of fluids, including liquids, gases, and corrosive, high-viscosity, and dirty fluids.
- Multi-parameter measurement: In addition to measuring mass flow, Coriolis mass flowmeters can also measure parameters such as fluid density and temperature to provide comprehensive flow data for the production process.
Application field
Coriolis mass flowmeter is widely used in modern chemical, pharmaceutical, biological, food, aviation, shipping, energy and other fields. In the chemical industry, it can be used for liquid and gas metering and transportation control; In the pharmaceutical industry, it can be used for logistics control in the drug production process; In the field of biotechnology, it can be used to monitor fermentation and culture processes in bioreactors. In the food industry, it can be used for the measurement of liquid, solid and gaseous food logistics; In the field of aviation and aerospace, it can be used to measure and monitor the flow and quality of aviation fuel. In addition, in the energy industry, Coriolis mass flow meters also play an important role in the measurement and control of energy substances such as oil and natural gas.
Matters needing attention
When using Coriolis mass flow meter, ensure that the fluid flow flow is from bottom to top, and avoid installing the instrument at the highest point of the pipeline to prevent the accumulation of pipeline gas affecting the normal operation of the instrument.
Coriolis mass flowmeters are regularly maintained and calibrated to ensure measurement accuracy and reliability.
Pay attention to prevent the impact of vibration interference on Coriolis mass flowmeter, avoid using in environments with large vibration or take vibration reduction measures.
In summary, Coriolis mass flowmeter, as a high-precision, direct measurement of fluid mass flow instrument, plays an important role in modern industrial processes. Its wide application and advantages make it an indispensable precision measuring instrument in many industrial fields.
If you want to know more about the flow meter or flow meter selection, please consult the Aister flow meter manufacturer email: sales@aistermeter.com for help.