The principle of electric eddy current sensors is introduced. The method to measure displacement using an electric eddy currentsensor is given.
本文简单介绍了电涡流传感器的原理，给出了利用电涡流传感器测量位移的方法。
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Currentsensor is an important element for on line PD monitor of electric power equipment and its transfer characteristic has a direct influence on PD measurement.
The principle of paper thickness on-line measurement using displacement differential method based on laser displacement sensor and electric eddy current displacement sensor is introduced.