| 摘要 |
Apparatus and method for measuring the relative proportions of dissimilar fluids in a pipe (2) includes a variable frequency source (6) of electromagnetic radiation, arranged to send radiation into a coil resonator (1), which is helically wound around the pipe. A detector (7) detects radiation emitted by the resonator. At least one of the source and the detector is physically connected to the resonator but preferably both are connected, by means of co-axial cables (8, 10), and capacitors (9,11). The provision of direct connection between the source, and/or the detector, and the coil resonator, results in reduced attenuation between input and output and an improved signal-to-noise ratio of the system. |
