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.