![]() ![]() Magnetic flowmeters can measure properly when the electrical conductivity of the liquid is greater than approximately 5μS/cm. Magnetic flowmeters measure the velocity of conductive liquids in pipes, such as water, acids, caustic, and slurries. On the other hand, don’t work on nonconductive fluids such as oils. Mags are intermediate in accuracy therefore not commonly used for commodity transfer except for some special cases where the fluid is not expensive like water. They represent about 23% of all flowmeters sold. As such, the turndown associated with magnetic flowmeters can approach 20:1 or better without sacrificing accuracy. In contrast with many other flowmeter technologies, magnetic flowmeter technology produces signals that are linear with flow. The electronic transmitter processes the voltage signal to determine liquid flow. Faraday’s Law states that the voltage generated is proportional to the movement of the flowing liquid. ![]() When the fluid moves faster, more voltage is generated. Following Faraday’s Law, flow of a conductive liquid through the magnetic field will cause a voltage signal to be sensed by electrodes located on the flow tube walls. In a magnetic flowmeter, a magnetic field is generated and channeled into the liquid flowing through the pipe. ![]() Magnetic flowmeters use Faraday’s Law of Electromagnetic Induction to determine the flow of liquid in a pipe. They can handle light particulate, have a higher pressure drop, lower rangeability and are slightly less accurate.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |