Can electromagnetic methods be used for softening water in steel mills?
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Can electromagnetic flowmeters be used with soft water? The medium at the client’s site in steel mills is soft water, and they want to use electromagnetic flowmeters; however, I’m concerned that the conductivity level may not meet the requirements. Has anyone else used such flowmeters in this situation?
Soft water can generally be measured using electromagnetic flowmeters, as its electrical conductivity usually meets the requirements for such measurements. It is also possible to use soft water from steel mills as a medium for electromagnetic flowmeters, but it is necessary to ensure that the conductivity of the soft water meets the minimum requirements of the flowmeter. It is recommended to consult the technical parameters provided by the flow meter manufacturer to confirm whether it meets the usage requirements. .
Thank you for your reply. I have already communicated with the client and asked them to check what the conductivity is
A soft water system using a sodium ion exchanger removes only calcium and magnesium ions, but not hydrogen ions. An electromagnetic flowmeter can be used when the hydrogen conductivity is relatively high. The conductivity of the primary demineralized water system (anion and cation resins) typically used in low-pressure boilers
Soft water has very low conductivity, so electromagnetic flowmeters are usually not applicable. Small-diameter turbine flowmeter, large-diameter orifice plate differential pressure flowmeter
Soft water only removes hardness ions; although the conductivity of the water itself changes, it generally does not drop to the level of deionized or pure water, so there is no problem using an electromagnetic flowmeter. If it is ultra-pure water, that is, boiler feed water, then a capacitive electromagnetic flowmeter should be chosen, as it can handle water with low conductivity. The CA series of electromagnetic flowmeters from Yokogawa Motor can handle a minimum conductivity of 0.05 uS/cm