Magnetic flowmeters are not suitable for measuring the flow rate of 95% concentrated alcoholic solutions, which have a low conductivity and do not generate enough inductive signal for detection.
In modern industrial production and laboratory research, accurate measurement of fluid flow is crucial. As a widely used flow measurement tool, the working principle of magnetic flowmeter is based on Faraday's law of electromagnetic induction, that is, when a conductive medium moves in a magnetic field, it will generate an induced electromotive force. By measuring the electromotive force, the flow rate of the fluid can be calculated. However, not all fluids are suitable for magnetic flow meters, including high-purity alcohol solutions.
95% alcohol (also called ethanol) is a common organic solvent that is widely used in medicine, chemical industry, experimental science and other fields. Although it is liquid at room temperature, it is not a good conductor of electricity and its electrical conductivity is quite low. At 25°C, the conductivity of a 95% alcohol solution is approximately 0.26μS/cm, which is far lower than the minimum conductivity threshold for the electromagnetic flowmeter to work effectively - usually the conductivity of the measured medium is required to be at least 5μS /cm or above.
Due to the extremely low ion concentration in the alcohol solution, when it flows in the magnetic field of the magnetic flowmeter, the induction signal generated is too weak to be effectively detected. Therefore, even if the alcohol molecules theoretically flow under the action of electric current, Small charge migration may occur, but in practical applications, such conductivity is not sufficient to support accurate and stable measurements by electromagnetic flowmeters.
In summary, due to the conductivity characteristics of 95% alcohol solution, the magnetic flowmeter is not suitable for directly measuring its flow rate. For flow measurement of this type of low conductivity liquid, you can choose a flow meter that relies on other principles, such as a differential pressure flow meter, which can accurately measure the mass flow of the fluid without relying on the conductivity of the medium. In this case, Choose a more appropriate option.
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Mass Flow Meter is a new type of advanced flow measurement instrument and has been rapidly developed in the world. It has been widely used for process detection and custody transfer measurement in many industries such as petroleum, petrochemical, chemical, pharmacy, marine, pharmaceutical, municipal, paper, food and energy and so on. It has been highly valued by the flow research community and welcomed by users at home and abroad.
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Supmea Co., Ltd. is a national high-tech enterprise engaged in the research and development, manufacturing, sales, and service of process automation instruments. Professional production of Magnetic flowmeter, Magmeter flow meter, Vortex flowmeter, Turbine flowmeter, Ultrasonic flowmeter, and Thermal mass flowmeter.
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