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Three Component Geophone String

Three component geophone string(triaxial geophone string) is kind of land cased geophone to perform  HVSR,MASW and vibration analysis, with features of robust, light weight and convenient for field operation. One vertical and two horizontal high-precisions geophone sensors are properly coupled and mounted in a robust waterproof triaxial case which equipped with 75mm steel spikes. Triaxial geophone string is widely adopted in underground water surveys, geological stratigraphy, landslide studies, pile foundation detecting, subsoil cavities detection, mining, archaeology, etc.

Triaxial Three component geophone string ranging from 4.5hz to 100hz are available. With KCK connector, KCL connector, 408 connector, Kooter connector, MP16 connector, Split spring connector or Mueller clip connector optional.

Click here and download data sheet of triaixal geophone string or contact us and get special discounts.


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Three Component Geophone String Product Parameters


(Equivalent to SM-6 B- Coil 4.5hz)


(Equivalent to SM-24,10hz,375ohm)


(Equivalent to SM-4,10hz)


(Equivalent to GS-32CT)


(Equivalent to GS-20DX,10hz)


(Equivalent to SM-4,14hz)

Natural frequency ( Hz )4.5±10%10±2.5%10±5%10±2.5%10±5%14±5%
Open circuit damping0.6±5%0.250.2710.3160.300.2
Damping with Shunt Resistor\0.6+0%,~5%0.60±5%0.698±2.5%0.707±5%0.6±5%
Open Circuit Intrinsic Voltage Sensitivity(v/m/s)28.8±5%28.8±2.5%28.8±5%27.5±2.5%28.0±5%28.8±5%
Sensitivity with Shunt Resistor(v/m/s)\22.5±2.5%22.7±5%19.7±5%20.0±5%18.2±5%
Coil Resistance (ohm)375±5%375±2.5%375±5%395±5%395±5%375±5%
Harmonic Distortion ( % )≤0.2≦0.1≦0.2≦0.1≤0.2≦0.2
Typical Spurious Frequency ( Hz )≥240>240≧240≧250≥200≧240
Moving Mass ( g )11.311.011.311.211.011.6
Max.coil excursion p-p (mm)
Max.tilt angle20º10º20º10º20º20º
Element Diameter (mm)25.425.425.425.425.425.4
Element Height (mm)
Element Weight (g)
Operating Temperature (℃ )-40℃ to + 100℃-40℃ to + 100℃-40℃ to + 100℃-40℃ to + 100℃-40℃ to + 100℃-40℃ to + 100℃
All parameters specified herein are rated at a temperature 20℃±2℃

* 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, 8Hz, 10Hz, 14Hz, 15Hz, 28Hz, 30Hz, 38Hz, 40Hz, 60Hz,80Hz and 100Hz geophones.

*  Specifications are subject to change without prior notice.

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