Type |
EG-28 ( Equivalent to GS-20DX 28Hz ) |
Natural frequency ( Hz ) |
28±5% |
Open circuit damping |
0.27 |
Damping with calibration shunt |
0.552±5% |
Calibration shunt resistance(ohm) |
1000 |
Open circuit sensitivity (v/m/s) |
39 |
Sensitivity with calibration shunt(v/m/s) |
28±5% |
Coil Resistance (ohm) |
395±5% |
Harmonic Distortion ( % ) |
≦0.2 |
Typical Spurious Frequency ( Hz ) |
≧350 |
Moving Mass ( g ) |
11 |
Max.coil excursion p-p (mm) |
1.5 |
Max.tilt angle |
20º |
Element Diameter (mm) |
25.4 |
Element Height (mm) |
33 |
Element Weight (g) |
100 |
Operating Temperature(℃) |
-40℃ to +80℃ |
*Other Geophone Type available
( 2Hz,2.5Hz,3Hz,4Hz,4.5Hz,8Hz,10Hz,14Hz,15Hz,30Hz,38Hz,40Hz,60Hz,80Hz,100Hz )