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FPD D-DOT SENSOR
 The FPD (Flush Plate Dipole) sensor is mounted in a conducting surface (ground plane, aircraft wing, etc.) and used to measure the normal component of the displacement current (dD/dt). It can also be used to measure the time rate-of-change of surface charge density dqs /dt. (Data Sheet 1117 describes special qs sensors.) The FPD sensor is extremely useful in EMP or lightning fields of high electric stress or where minimum perturbation is required. A special version adapts to the wing tip of a C-130 aircraft used for in-flight lightning measurements. The sensor is a passive device and requires no power.  |
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