product product

GS-20DX Geophone Sensor ( Equivalent)

The GS-20DX geophone sensor (equivalent, P/N: ST-20DX)  is compatible with all field data acquisition system. All operating parameters are confirmed with computerized test system during the manufacturing process. The GS-20DX geophone classic digital grade geophone is the industry standrd. Its rugged design with pigtail construction ensures relability and data integrity in field conditions.

● Industry standard for cost effectiveness, quality and reliability.

● Typical spurious response greater than 250Hz.

● 5% frequency and damping tolerance for minimum phase shift.

● Waterproof land and marsh case require no poting and provide easy access to basic units.

●Choice of various standard natural frequencies (8Hz, 10Hz,14Hz,28Hz,40Hz,60Hz and 100Hz).

● 3-year limited warranty on basic element exclusive of high voltage, lightning or physical abuse.

Click here and download data sheet of 20DX geophones or contact us and get more detailed information.

download Request A Quote

For any inquiries, please contact with our Marketing Team at or Supporting Team at


GS-20DX Geophone Sensor Product Parameters

TypeST-20DX     8hzST-20DX 10hzST-20DX 14hzST-20DX 28hzST-20DX 60hzST-20DX 100hz
Natural frequency ( Hz )8±5%10±5%14±5%28±5%60±5%100±5%
Open circuit damping0.380.300.220.220.510.45
Damping with Shunt Resistor0.71±5%0.707±5%0.51±5%0.552±5%\\
Open Circuit Intrinsic Voltage Sensitivity(V/m/s)
Sensitivity with Shunt Resistor(V/m/s)23.0±5%20.0±5%20.0±5%28.0±5%\\
Coil Resistance (ohms)395±5%395±5%395±5%395±5%610±5%570±5%
Harmonic Distortion ( % )≤0.2≤0.2≤0.2≤0.2≤0.2≤0.2
Typical Spurious Frequency ( Hz )≥180≥200≥250≥350≥450≥600
Moving Mass ( g )
Max.coil excursion p-p (mm)
Max.tilt angle20º20º20º20º20º20º
Element Diameter (mm)25.425.425.425.427.027.0
Element Height (mm)33.533.533.533.533.533.5
Element Weight (g)
Operating Temperature(℃)-45℃ to + 100℃–45℃ to + 100℃-45℃ to + 100℃-45℃ to + 100℃-45℃ to + 100℃-45℃ to + 100℃
● All parameters specified herein are rated at a temperature 20℃±2℃.

● 3-year limited warranty on basic element exclusive of high voltage, lightening and physical abuse.

* Other Geophone Type are also Available: SM-4 equivalent, SM-6 equivalent, SM-24 equivalent, SG10 equivalent, GS-32CT equivalent, GS ONE equivalent, 1Hz, 2Hz, 2.5Hz, 3Hz,4Hz, 4.5Hz, 5Hz, 8Hz, 10Hz, 14Hz,15Hz, 28Hz, 30Hz, 38Hz, 40Hz, 60Hz, 80Hz and 100Hz geophones.

* Specifications are subject to change without prior notice.


  • Home
  • Contact Us
  • Top
  • toptop