GS-20dx Geophone for Seismic Data Acquisition and Vibration Monitoring

• After-sales Service: Available
• Warranty: 3 Year
• Accuracy: <1mm
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: 20dx geophone
• Vertical Lines: 1
• Horizontal Line: 1
• Natural Frequency: From 8Hz to 100Hz Available
• Geophone Direction: Vertical, Horizotnal or 3c Optional
• Typical Spurious Frequency: Greater Than 250Hz
• Data Tolerance: 5%
• Geophone Case: Reinforced Land Case or Marsh Case
• Geophone Spike: 75mm Steel Soil Spike or Brass Marsh Spike
• Leader in Cable Od: 4.6mm to 7.8mm Available
• Warranty Period: 3-Year
• Transport Package: Standard Export Carton
• Specification: Vertical / Horizontal
• Trademark: SEIS TECH
• Origin: China
• HS Code: 9015800090
• Production Capacity: 500, 000.00/Year
• Package Size: 20.00cm * 15.00cm * 10.00cm
• Package Gross Weight: 0.300kg

Product Description

The GS-20DX equivalent digital grade geophone 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 standard. 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 geophone elements exclusive of high voltage, lightning or physical abuse.

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 (ohm)	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(ºC)	-45ºC to + 100ºC	--45ºC to + 100ºC	-45ºC to + 100ºC	-45ºC to + 100ºC	-45ºC to + 100ºC	-45ºC to + 100ºC
All parameters specified herein are rated at a temperature 20ºC±2ºC

Contact with us and get more detailed information.