Equivalent to GS-20DX geophone 28hz sensor Vertical

Short Description:

The The 20DX geophone 28hz (EG-28-I) is seismic sensor designed for detecting ground vibrations. With a natural frequency of 28Hz, it is capable of detecting a wide range of seismic signals, making it ideal for use in earthquake monitoring, oil and gas exploration, and other geophysical applications.

Product Detail

Product Tags


Type EG-28-I (GS-20DX equivalent)
Natural Frequency ( Hz ) 28 ± 5%
Coil resistance(Ω) 395±5%
Open Circuit Damping 0.27
Damping with calibration shunt 0.552 ± 5%
Open circuit sensitivity (v/m/s) 39
Sensitivity with calibration shunt(v/m/s) 28 ± 5%
Calibration shunt resistance(ohm) 1000
Harmonic distortion ( % ) <0.2%
Typical Spurious Frequency (Hz ) ≥350Hz
Moving Mass ( g ) 11.0g
Typical case to coil motion p-p ( mm ) 1.5mm
Allowable Tilt ≤20º
Height ( mm ) 33
Diameter ( mm ) 25.4
Weight ( g ) 100
Operating Temperature Range ( ℃ ) -40℃ to +100℃
Warranty Period 3 years


Introducing the 20DX Geophone 28Hz Vertical sensor, the next generation geophone delivering exceptional performance and reliability for seismic exploration. The working parameter error of the geophone is small, the design is stable, and it is suitable for formations of various depths and geological environments.

The 20DX Geophone 28Hz Vertical sensor has a compact and lightweight construction ensuring ease of use and portability. Its rational design can be seamlessly integrated into your seismic survey project. Whether you're conducting research in the field or in a controlled environment, this geophone guarantees accurate and reliable results every time.

One of the outstanding features of the 20DX Geophone 28Hz Vertical Transducer is its robust design with pigtailed construction. This innovative design ensures the highest reliability and data integrity even under harsh field conditions. You can trust this geophone to withstand the elements and consistently deliver accurate measurements.

The 20DX geophone 28Hz vertical transducer sets the industry standard when it comes to cost-effectiveness, quality and reliability. We understand the importance of delivering high-performance products without breaking the bank. That's why our geophones are not only affordable, but also durable, saving you money in the long run.

In summary, the 20DX Geophone 28Hz Vertical Transducer is ideal for seismic exploration. Its advanced features such as small operating parameter error and reliable performance make it suitable for a wide range of depths and geological environments. Additionally, its rugged design guarantees durability and data integrity, making it ideal for field conditions. Don't compromise on quality or reliability – choose the 20DX Geophone 28Hz Vertical Transducer for all your seismic survey needs.

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