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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.

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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-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 damping 0.337 0.271 0.2 0.620
Damping with calibration shunt 0.6 ± 5% 0.6±5% 0.6 ± 5% 0.648 ± 5%
Calibration shunt resistance(ohms) 2400 1400 640 7500
Open circuit sensitivity (V/m/s) 28.8 28.8 28.8 32.50
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 ) 11.3 11.3 11.6 9.3
Max. coil excursion p-p (mm) 2.0 2.0 2.0 1.8
Max. tilt angle ≦20º ≦20º ≦20º ≦20º
Element Diameter (mm) 25.4 25.4 25.4 26
Element Height (mm) 32 32 32 32
Element Weight (g) 74 74 74 80
Operating Temperature(℃) -40℃ to + 100℃ -40℃ to + 100℃ -40℃ to + 100℃ -40℃ to + 100℃
Warranty Period 3 years 3 years 3 years 3 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.

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