product product

SM-4 Equivalent Geophone Sensor

The SM-4 equivalent geophone sensor (ST-8N/ST-10N/ST-14N/ST-28N/ST-40N/ST-60N/ST-100N) is designed for low weight, long field-life,and ultra reliable performance.Precision engineered components and computerized test equipment ensure consistency in manufacture and operation throughout and beyond the limited replacement guarantee period of three years.

● Precision machine, rotating coil design.

● Precious metal contacts for consistent reliable &prolonged field performance.

●Choice of three standard natural frequencies (8Hz, 10Hz,14Hz,28Hz,40Hz,60Hz and 100Hz).

● Vertical and Horizontal elements available for 3-C applications.

● For 2-D and 3-D seismic exploration with bandwidth from 10Hz up to 190Hz.

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

Click here and download data sheet of SM-4 equivalent geophones. Or contact us to get special discounts.

download Request A Quote

For any inquiries, please contact with our Marketing Team at or Supporting Team at


SM-4 Equivalent Geophone Sensor Product Parameters

TypeST-8N(Equivalent to SM-4, 8Hz)ST-10N(Equivalent to SM-4, 10Hz)ST-14N(Equivalent to SM-4, 14Hz)ST-40N(Equivalent to SM-4, 40Hz)
Natural frequency (Hz)8 ± 5%10±5%14 ± 5%40 ± 5%
Open circuit damping0.3370.2710.20.620
Damping with calibration shunt0.6 ± 5%0.6±5%0.6 ± 5%0.648 ± 5%
Calibration shunt resistance(ohms)240014006407500
Open circuit sensitivity (V/m/s)28.828.828.832.50
Sensitivity with calibration shunt(V/m/s)24.9±5%22.7±5%18.2 ± 5%30.3± 5%
Coil Resistance (ohms)375 ± 5%375±5%375 ± 5%540 ± 5%
Harmonic Distortion (%)<0.2≦0.2<0.2<0.2
Typical Spurious Frequency (Hz)≧240≧240≧240≧300
Moving Mass ( g )11.311.311.69.3
Max. coil excursion p-p (mm)
Max. tilt angle≦20º≦20º≦20º≦20º
Element Diameter (mm)25.425.425.426
Element Height (mm)32323232
Element Weight (g)74747480
Operating Temperature(℃)-40℃ to + 100℃-40℃ to + 100℃-40℃ to + 100℃-40℃ to + 100℃
Warranty Period3 years3 years3 years3 years
● 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 type of geophones are also available: SM-4 Equivalent, SM-6 Equivalent, SM-24 Equivalent, SG10 Equivalent, GS-20DX 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.

  • Home
  • Contact Us
  • Top
  • toptop