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The geophone 4.5hz (EG-4.5-II) is a conventional type of moving
coil geophone with small
error in working parameters and stable and reliable performance.
The structure is reasonable in design, small in size and light in
weight, and is suitable for seismic exploration of strata and
geological environments of different depths.
It is equivalent to SM-6 B coil 4.5hz geophone.
Widely used in industrial vibration-monitoring systems.
Ideal choice for shear-wave horizontal elements.