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LGT-20DS Seismic Geophone
LGT-20DS Seismic Geophone
  Instruction
LGT-20DS seismic Geophone is compatible with LGT-20D conventional seismic geophone and its spurious response is greater than 250 Hz for extended clean band width. Its typical string distortion is less than 0.1%. it can be installed in variety of LGT geophone cases.
  Specifications

Type LGT-32CT LGT-20D10S
Natural Frequency (Hz) 10±2.5% 10±2.5%
Open Circuit Damping 0.316±2.5% 0.3±2.5%
Close Circuit Damping 0.7±2.5% 0.7±2.5%
Intrinsic Voltage Senditivity (V/cm/s) 0.275±2.5% 0.28±2.5%
Sensitivity with Shunt Resistance (V/cm/s) 0.197±2.5% 0.2±2.5%
Coil Resistance 395±2.5% 395±2.5%
Close Direct Current Resistance 283±2.5% 283±2.5%
Harmonic Distortion 0.1% 0.1%
Typical Spurious Frequency 250 250
Moving Mass (g) 11.2 11
Coil Excursion P-P 1.5 1.5
Maintains Fn Specifications to Tilt Angle  20 20
Core Unit Diameter (mm) 25.4 25.4
Core Unit Height (mm) 33 33
Core Unit Mass (g) 87 87
Operating Temperature() -40 to +90 -40 to +90
Warranty (year) 3 3

Frequency Response Curves

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