| 摘要 |
A system for measuring the electromagnetic properties of a member without physically contacting the member. The system includes an electromagnetic energy transceiver having a transmitting and receiving antenna. The antenna is positioned in close proximity but spaced from to the member being tested. Electromagnetic energy, such as microwave energy, is transmitted by the transceiver at the member being tested. Electromagnetic energy that has been reflected by the member back to the antenna is received at the antenna. The transceiver generates an output that is proportional to the reflected electromagnetic energy and, thus, is proportional to the non-reflected electromagnetic energy absorbed by the member being tested. The output signal can thus be used to indicate resistivity of the member to electrical transmission or other electromagnetic properties such as magnetic susceptibility. The output signal can be connected to a drive controller of a high temperature coating system to increase or decrease electrical resistivity of the member while it is being manufactured to thereby control or to maintain a predetermined electrical resistivity or other electromagnetic property such as magnetic susceptibility of the member at a desired quality.
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