ABSTRACT

The magnetic induction at point P in the space which any current carrying conductor generates could be obtained by using the superposition principle.

B I dl r r

∫ ∫dB μπ 24 (2)

3 INTERAL MAGNETIC FIELD INVESTIGATION ON THE SADDLE-SHAPED COIL

Different shapes of coil excite different magnetic fields; thus, the theoretical analysis of saddle-shaped coils is carried out to provide theoretical basis to the design of the electromagnetic flow meter.