Measuring the metal-containing mass of pulp products using the electromagnetic method

Two ways of solving the problem of precisely measuring the metal-containing mass of pulp are considered. The first method involves continuously measuring the magnetic permeability of the pulp and automatically correcting the calculation of a dry mass of a metal-containing product. The second method involves applying the specific electromagnetic flowmeters insensitive to the variation in the magnetic properties of a measured medium. Technical solutions which allow one to obtain an additional electric signal characterizing the magnetic permeability of the pulp are analyzed. Its presence makes it possible not only to eliminate the error in measuring the volume flow rate due to the effect of the magnetic component of the pulp, but also to measure the mass of the metal-containing product. Applying the electromagnetic flowmeters is the most promising way to solve this problem.