The effect of liquid viscosity on electromagnetic flowmeter

　　As the viscosity of the liquid increases, the linear region of the meter coefficient narrows and the lower flow rate limit increases. When the viscosity increases to a value, even the wireless region. Spiral vanes are much better than straight vanes. For liquids, the sensor is usually calibrated with water. When the accuracy is class 0.5, fluids below 510-6 mm2/s can be used regardless of viscosity. When the viscosity of the fluid is higher than 510-6 mm2/s, it can be checked with a fluid of equivalent viscosity and no viscosity correction is required. In addition, measures can be taken to compensate for the effect of viscosity.

　　Examples include narrowing the application range, increasing the offline flow value or multiplying the instrument factor by a Reynolds number correction factor. The effect of viscosity on the instrument factor is related to the type of construction of the sensor and the caliber of the parameter. There are several ways to express the effect of viscosity on the instrument coefficient: the relationship between the instrument coefficient and the Reynolds number, the relationship between the instrument coefficient and the output frequency, the relationship between the instrument coefficient and the output frequency divided by the ratio of the years of movement, etc.

　　Comprehensive above is electromagnetic flowmeter manufacturer about the effect of liquid viscosity on electromagnetic flowmeter. For more questions about electromagnetic flowmeter, please contact us online.