| 摘要 |
Apparatus for measuring location and disposition of an interface between two media exhibiting a difference in dielectric constants or electric conductivity and including a column of pairs of capacitors arranged in a direction along which the location and disposition of the interface may vary, the media influencing the value of the capacitors. The capacitors of a pair having first common electrode configuration connected to an input line and second, individual, galvanically separated electrodes connected to a differential amplifier; electrical pulses are fed sequentially to the input lines and coupled to the differential amplifier through the pairs of capacitors. Imbalance on the differential amplifier output is referenced against pulse count reached when the imbalance occurs. |
