Detector Reluctance Type

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Item Detector Reluctance Type
Item code
Description Reflection
Manufacturer Petty Geophysical
Circa 1933
Donor Petty Collection
Location The University of Texas at Austin
Serial number
Taxonomy GSHP021

The reluctance (or moving armature) geophone where the mechanical movement produces a change in the reluctance of a magnetic circuit and hence the flux through a coil. Reluctance Electromagnetic Seismographs have been developed most extensively for reflection shooting. Two balanced armature types. They are very efficient, well adapted to intermediate and high natural frequencies, and may be used for both refraction and reflection work.