Geophone
Type: ZF-20HP
Natural frequency(Hz): 10± 2.5%
Typical Spurious Frequency(Hz): ≥ 250
Harmonic Distortion(%): <0.1
Open Circuit Damping: 0.30
Damping with shunt 1K Ω Resistor: 0.707± 2.5%
Open Circuit Resistance ((Ohm): 395± 2.5%
Resistance With shunt 1K Ω Resistor: 283± 2.5%
Open Circuit Intrinsic Voltage Sensitivity (v/m/s): 28± 2.5%
Sensitivity with shunt 1K Ω Resistor (v/m/s) l: 20.1
Allowable Tilt(%): 10
Moving Mass(g): 11
Max. Coil Excursion P. P(mm): 1.5
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