Product · Seismographs & Seismic Systems
Geospace GS-20DX Geophone
The GS-20DX is an industry-standard 10 Hz digital-grade geophone with a classic rugged pigtail construction, widely specified as the reference sensor for exploration and engineering seismic surveys.
New Refurbished Absolute Certified Surplus
About the Geospace GS-20DX Geophone
The GS-20DX is an industry-standard 10 Hz digital-grade geophone with a classic rugged pigtail construction, widely specified as the reference sensor for exploration and engineering seismic surveys.
Its consistent, well-characterized response makes it a common choice for crews standardizing sensor fleets across large multichannel arrays, and it pairs with virtually any land seismograph on this list.
| Specification | Value |
|---|---|
| Natural frequency | 10 Hz |
| Sensitivity | 28 V/m/s |
| Coil resistance | 395 Ω |
| Element diameter | 25.4 mm |
| Operating temperature | −34 °C to +71 °C |
| Grade | Digital-grade, industry standard |
Available across all four PartnerGeometrics condition tiers — New, Refurbished, Absolute Certified, and Surplus. See our condition tier guide for details on what each tier includes.