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.
For any inquiries, please contact with our Marketing Team at firstname.lastname@example.org or Supporting Team at email@example.com.
|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.