Small size, lightweight
High sensitivity, high output
Clean response to 600 Hz
Full one year warranty
The GS-100 is a high frequency, high output geophone with a natural frequency of 100 Hz. It has a clean band pass and minimum spurious response to 600 Hz.
Standard coil resistances are 600, 975, 1550 and 2300 ohms. Open circuit damping is 60% of critical.
The PC-21 Land Case is used with the GS-100 geophone.
Natural Frequency : 100 Hz } 10%
Maintains Specifications : Up to 90 Tilt } 12%
Typical Spurious Frequency : To 600 Hz
Standard Coil Resistance @ 25C : 600, 975, 1550, 2300 ohms } 5%
Intrinsic Voltage Sensitivity with 600 Ohm Coil : 0.91 V/in/sec (.36 V/in/sec) } 10%
Normalized Transduction Constant (V/in/sec) : 0.037 (sq.root of Rc)
Open Circuit Damping } 16% : 60% of critical
Moving Mass : 6 g } 5%
Typical Case to Coil Motion P-P : 0.02 in (.05 cm)
Harmonic Distortion with driving velocity of .7 in/sec (1.8 cm/sec) P-P : 0.2% or less at 100 Hz, 0.316
Shunt Resistance for Damping Calibration for 395 ohm coil : 60% damping } 2%: 1500 ohms
Dimensions :
Height (less terminals*) : 1.38 in (3.50 cm)
Diameter : 1.25 in (3.18 cm)
Weight : 4.4 oz (125 g)
* terminal height is .12 in
Chart for Seismic Detector Response Curve Output VS. Frequency (GS-100 @ 600 Ohms & GS-100 @ 1550 Ohms, GS-100 @ 2300 Ohms).
Cases Available
PC-21 Land Case
Specifications are subject to change without notice.