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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 20DX 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 three 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 to get special discounts.

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For any inquiries, please contact with our Marketing Team at sales@seis-tech.com or Supporting Team at info@seis-tech.com.

MAIN TECHNICAL PARAMETERS
Type ST-20DX     8hz ST-20DX 10hz ST-20DX 14hz ST-20DX 28hz ST-20DX 60hz ST-20DX 100hz
Natural frequency ( Hz ) 8±5% 10±5% 14±5% 28±5% 60±5% 100±5%
Open circuit damping 0.38 0.30 0.22 0.22 0.51 0.45
Damping with Shunt Resistor 0.71±5% 0.707±5% 0.51±5% 0.552±5% \ \
Open Circuit Intrinsic Voltage Sensitivity(V/m/s) 28.0 28.0 28.0 39.0 35.5 23.0
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 ) 11.0 11.0 11.0 11.0 6.5 5.0
Max.coil excursion p-p (mm) 1.5 1.5 1.5 1.5 1.5 1.5
Max.tilt angle 20º 20º 20º 20º 20º 20º
Element Diameter (mm) 25.4 25.4 25.4 25.4 27.0 27.0
Element Height (mm) 33.5 33.5 33.5 33.5 33.5 33.5
Element Weight (g) 87.0 87.0 87.0 87.0 95.0 95.0
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 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.

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