| 摘要 |
Apparatus 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 activity of the resonator. At least one of the source and the detector is physically connected to the resonator, preferably by means of co-axial cables (8, 10). Previously, electromagnetic energy was transmitted into a cavity containing the resonator and detected remotely. This resulted in large attenuation between input and output. |
