The saddle-shape excitation coil is available in the electromagnetic flow meter usually. To discuss the saddle-shaped excitation coil, firstly the magnetic fields in the space generated respectively by straight, elliptical, and circular excitations of the coil segment are analyzed by using the Biot-Savart law. On this basis, the magnetic field distribution inside the electromagnetic flow measurement sensor produced by the saddle-shaped excitation coil is investigated and discussed. Finally, a comparative analysis between magnetic field distributions excited by rectangular and saddle-shape coils inside the instrument is suggested.
展开▼
