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Minimum Electric conductivity for Magnetic Inductive Flowmeters

Magnetic Inductive Flowmeters are one of the ideal flowmeter for liquids. However, the measuring liquids have one condition; The liquid to be measured is to be conductive.. Theoretically, the accuracy of Magnetic Inductive Flowmeters is free from the difference and changes of liquid conductivity subject to the fact that the such liquid conductivity is separate than the Minimum Limit of the specification. This Minimum Limit of the conductivity is specified by two different types of liquid; Water and Other liquids than Water This is because that Flow noise is easily induced by water and the indication and output are noisy and higher limit of conductivity is specified in case of Water flow measurement. Such Minimum Conductivity by types of flowmeter as well as types of liquids is shown below; Version Model Liquids other than water Water Separate Version MAGMAX MGS1000F+MGC110F MGS4000F+MGC110F MGS4500F+MGC110F MGS5000F+MGC110F More than 5μS/cm More than 20μS/cm Compact (Integrated) Version MAGMAX MGM1010K MGM4010K MGM4510K MGM5010K MGM1090K MGM4090K MGM4590K MGM5090K More than 5μS/cm (More than 10μS/cm for DN2.5) More than 20μS/cm Capacitance detection type MAGMAX MGM5090K-CAP More than 0.05μS/cm More than 1μS/cm Reference ·  Examples of liquids not suitable for Electro magnetic flowmeters due to conductivity; 　 　 Petroleum, Petroleum products, Liquefied gases, Vegetable oil, Pure and Ultrapure water, Pure Alcohol ·  Seems to be OK, but failed 　 　 Spirit having 25% alcohol. Whiskey just after distilled, 30% Propylene mixed water ·  Seems to be difficult, but successfully measured; 　 　 Shampoo ·  Successful case by using Capacitance Detection type model MGM5090K-CAP 　 　 Sugar syrup, Ethylene Glycol, Boiler water (They could not be measured by existing Magnetic flowmeters.)

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