Product Description
SM4 Geophone 14Hz Vertical with Amphib-IV connector
The SM-4 equivalent geophone element 14Hz 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. Single SM4 geophone 14Hz vertical in waterproof land case with spike 75mm, with 0.5m leader cable, terminated with Amphib-IV connector.
SM4 Geophone Response Curve and Phase Lag
Specification
All parameters specified here in are rated at a temperature 20℃±2℃ .
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Type
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EG-14-II
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Natural Frequency ( Hz )
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14 Hz ± 5%
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Coil resistance（Ω）
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375 Ω ± 5%
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Open Circuit Damping
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0.2 ±5%
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Damping With Shunt Resistor
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0.6 ± 5%
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Open Circuit Intrinsic Voltage Sensitivity ( v/m/s )
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28.8 v/m/s ± 5%
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Sensitivity With Shunt Resistor ( v/m/s )
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18.2 v/m/s ± 5%
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Damping Calibration-Shunt Resistance（Ω）
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640Ω
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Harmonic distortion ( % )
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＜0.2%
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Typical Spurious Frequency (Hz )
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≧240Hz
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Moving Mass ( g )
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11.6g
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Typical case to coil motion p-p ( mm )
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2mm
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Allowable Tilt
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≦20º
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Operating Temperature Range ( ℃ )
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-40℃ TO +100℃
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Height ( mm )
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32mm
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Diameter ( mm )
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25.4mm
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Weight ( g )
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74g
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Warranty Period
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1 years
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