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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 geophone strings 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.

SM-6 B coil 4.5hz equivalent geophone(ST-4.5N), SM-4 equivalent geophones(ST-8N, ST-10N, ST-14N, ST-28N, ST-40N and ST-100N), SM-24 10hz equivalent geophone(ST-10PN), 20DX geophones(ST-20DX 8hz, ST-20DX 10hz, ST-20DX 14hz, ST-20DX 28hz, ST-20DX 40hz and ST-20DX 100hz), 32CT equivalent geophone(ST-32CT),SG10 equivalent geophone (ST-10PG) are also available.

Click here and download data sheet of triaixal geophone string 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-4.5N

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

ST-10PN

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

ST-10N

(Equivalent to SM-4,10hz)

ST-32CT

(Equivalent to GS-32CT)

ST-20DX

(Equivalent to GS-20DX,10hz)

ST-14N

(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 damping 0.6±5% 0.25 0.271 0.316 0.30 0.2
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 ) 11.3 11.0 11.3 11.2 11.0 11.6
Max.coil excursion p-p (mm) 4.0 2.0 2.0 1.5 1.5 2.0
Max.tilt angle 20º 10º 20º 10º 20º 20º
Element Diameter (mm) 25.4 25.4 25.4 25.4 25.4 25.4
Element Height (mm) 36.0 32.0 32.0 33.3 33.5 32
Element Weight (g) 86.0 87.0 74.0 89.0 87.0 74
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.

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