| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a degradation measuring instrument and method for a covering insulator in a conductive cable which can measure the degradation and the material deterioration of an insulator covering a circumference with high accuracy without the need of cutting a cable and without the absorption of microwaves by a conductor. <P>SOLUTION: A cable C held by a holding member 2 can cover an outer opening part of a pinhole 12 of a microwave cavity resonator 1 in an adhered state, while a circulator 4 introduces microwaves oscillated from a gun oscillator 3 into the microwave cavity resonator 1 through a waveguide 11, a portion of the microwaves can be leaked from the outer opening part of the pinhole 12, the leaked microwaves irradiate an insulator A of the cable C held by the holding member 2, and the introduced microwaves are reflected in the microwave cavity resonator 1 to be amplified by an amplifier 5 so that a microwave observation device 6 can detect and observe the amplified microwaves. <P>COPYRIGHT: (C)2012,JPO&INPIT |
