Vertical geophone 4.5Hz in land case without connector Seismic geophone 4.5 Hz

Product Description
Geophone 4.5Hz Vertical without connector
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. Single geophone 4.5Hz vertical in waterproof land case with spike 75mm, with 1m leader cable, terminated without connector.
The lead cable length can be customized.

Geophone Response Curve and Phase Lag of Geophone 4.5Hz

Specification
All parameters specified here in are rated at a temperature 20℃±2℃ .
Type
EG-4.5-II
Natural Frequency ( Hz )
4.5±10%
Coil resistance(Ω)
375±5%
Damping
0.6±5%
Open circuit intrinsic voltage sensitivity ( v/m/s )
28.8 v/m/s ±5%
Harmonic distortion ( % )
≦0.2%
Typical Spurious Frequency (Hz )
≧150Hz
Moving Mass ( g )
11.3g
Typical case to coil motion p-p ( mm )
4mm
Allowable Tilt
≦20º
Operating Temperature Range ( ℃ )
-40℃ TO +100℃
Height ( mm )
36mm
Diameter ( mm )
25.4mm
Weight ( g )
86g
Warranty Period
3years
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