Geophone 40Hz for Coal Mine Prospecting and Shallow Survey

• Customization: Available
• Accuracy: <1mm
• Horizontal Line: 1
• Model NO.: pasi geophone
• Vertical Lines: 1
• Natural Frequency: 40Hz
• Geophone Direction: Verrtical, Horizontal or 3 Component
• Geophone Case: Reinforece Case for Land, Marsh or Snow Optional
• Spike: 75mm Steel Spike or Copper Spike Optional
• Cable: 4.6mm to 7.8mm Optional
• Connector: Split Plate, Mueller, Kooter, Kck, Kcl, Lck.
• After-sales Service: Available
• Warranty: 3 Year
• Transport Package: Standard Export Carton
• Specification: 1x1
• Trademark: SEIS TECH
• Origin: China
• HS Code: 9015800090
• Production Capacity: 50, 000sets/Year

Product Description

40Hz Geophone with Reinforced Case is an ideal choice for shallow seismic survey and it is mostly widely used in coal mine geological prospecting and exploration with the following features:

- Good parameter consistency.
 

- Firm mechanism structure.
 

- Excellent sealing & stability.
 

- Reinforced casing suitable for land ,snow, marsh and transition zone with Steel spike or Brass spike optional.
 

- Assorted geophone connectors and geophone cables are available.
 

- Compatible with various main stream seismographs such as Geometrics Geode, Strata Visor, Summit, PASI GEA24 and etc.
 

- Also Suitable for multi-wave component seismic data acquisition.
 

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

We supply 40hz geophone sensor, geophone element, land cased geophone, triaxial geophone and multi-geophone string with KCK connector, KCLconnector, 408 connector, Kooter connector, MP16 connector, Split spring connector or Mueller clip connector. Lead wires from O.D 4.6mm to O.D 7.8mm available.

Type	ST-20DX,40Hz
Natural frequency ( Hz )	40±5%
Open circuit damping	0.37±5%
Damping with Shunt Resistor	0.576±5%
Calibration Shunt Resistance(ohms)	1500
Open Circuit Intrinsic Voltage Sensitivity(V/m/s)	42.0±5%
Sensitivity with Shunt Resistor(V/m/s)	30.4±5%
Coil Resistance (ohms)	575±5%
Harmonic Distortion ( % )	≤0.2
Typical Spurious Frequency ( Hz )	≥380
Moving Mass ( g )	8.20
Max. coil excursion p-p (mm)	1.50
Max .tilt angle	20º
Element Diameter (mm)	27.0
Element Height (mm)	33.50
Element Weight (g)	95.0
Operating Temperature(ºC)	45ºC to + 80ºC
- All parameters specified herein are rated at a temperature 20ºC±2ºC.      - 3-year limited warranty exclusive of high voltage, lightening and physical abuse.