| 摘要 |
A monitoring apparatus for monitoring a multiphase flow in a pipe using magnetic induction tomography comprises at least two annular arrays 41, 37 of coils disposed around a pipe, each coil being adapted to transmit an electromagnetic field when energized by an input electrical signal and/or to receive an electromagnetic field and generate an output electrical signal, and at least one screening device for screening at least one of the coils of at least one of the annular arrays from an interfering electromagnetic field emitted from at least one other coil, the screening device comprising an annular screen located around the pipe. |
