Magnetic flowmeter with multiple coils

摘要

A magnetic flowmeter for measuring a flow of a process fluid includes a flowtube arranged to receive the flow of the process fluid. First, second and third coils are arranged adjacent the flowtube. First and second electrodes are arranged to sense an electrical potential of the process fluid related to an applied magnetic field and a flow rate of the process fluid. The sensed electrical potential is used to calculate the flow rate of the process fluid through the flow tube.

主权项

1. A magnetic flowmeter for measuring a flow of a process fluid, comprising:
a flow tube arranged to receive the flow of process fluid therethrough; a first coil arranged adjacent the flow tube; a second coil arranged adjacent the flow tube; a third coil arranged adjacent the flow tube; drive circuitry configured to apply a magnetic field to the process fluid using the first, second and third coils; first and second electrodes arranged to sense an electrical potential of the process fluid related to the applied magnetic field and flow rate of the process fluid; and a controller configured to calculate the flow of the process fluid based upon the electrical potential sensed by the first and the second electrodes; wherein the first and second electrodes are radially offset from the coils such that a line between the first and second electrodes forms an acute angle with a line between any of the first, second and third coils.