product product

Single Geophone String in Vertical Direction

Various single geophone string in vertical direction for HVSR, MASW, near surface, shallow geological prospecting and deep seismic imaging are available.

  • single geophone string in vertical direction types ranging from 1Hz to 100Hz with SM4 structure, SM6 structure, 20DX structure, 32CT structure, SG10 structure or GS One structure optional.
  • Assorted geophone cases suitable for land, snow, desert, marsh and transition zone are available.
  • Various geophone connectors including but not limited to Split spring connector, Muller clips, Kooter connector, KCL connector, KCK connector, 5515 geophone connector and SH17 WCR are selectable.
  • Different options for geophone cables(Cable OD, Length or Tensile strength) are available as per client’s request.

Just contact us to get more detailed configurations and 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

Single Geophone String in Vertical Direction 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 damping0.3370.2710.20.62
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)28.828.828.832.5
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)2221.8
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 Period1 year1 year1 year1 year
● All parameters specified herein are rated at a temperature 20℃±2℃.
● 1-year limited warranty on basic element exclusive of high voltage, lightening and physical abuse.

 

TypeST-20DX
8hz
ST-20DX
10hz
ST-20DX
14hz
ST-20DX
28hz
ST-20DX
40hz
ST-20DX
60hz
ST-20DX
100hz
Natural frequency ( Hz )8±5%10±5%14±5%28±5%40±5%60±5%100±5%
Open circuit damping0.38±5%0.30±5%0.22±5%0.27±5%0.37±5%0.52±5%0.45±5%
Damping with Shunt Resistor0.71±5%0.70±5%0.51±5%0.552±5%0.576±5%0.60±5%\
Calibration Shunt Resistance(ohms)180010001000100015001500\
Open Circuit Intrinsic Voltage Sensitivity(V/m/s)28.0±5%28.0±5%28.0±5%39.0±5%42.0±5%39.0±5%23.0±5%
Sensitivity with Shunt Resistor(V/m/s)23.0±5%20.0±5%20.0±5%28.0±5%30.4±5%27.0±5%\
Coil Resistance (ohms)395±5%395±5%395±5%395±5%575±5%668±5%570±5%
Harmonic Distortion ( % )≤0.2≤0.2≤0.2≤0.2≤0.2≤0.2≤0.2
Typical Spurious Frequency ( Hz )≥180≥200≥250≥350≥380≥400≥600
Moving Mass ( g )111111118.26.55
Max.coil excursion p-p (mm)1.51.51.51.51.51.51.5
Max.tilt angle20º20º20º20º20º20º20º
Element Diameter (mm)25.425.425.427272727
Element Height (mm)33.533.533.533.533.533.533.5
Element Weight (g)878787100959595
Operating Temperature()-45°C to +80°C-45°C to +80°C-45°C to +80°C-45°C to +80°C-45°C to +80°C-45°C to +80°C-45°C to +80°C
● All parameters specified herein are rated at a temperature 20±2.
● 1-year limited warranty exclusive of high voltage, lightening and physical abuse.

 

TypeST-4.5N( Equivalent to SM-6 B-Coil 4.5hz )
Natural frequency ( Hz )4.5±10%
Damping0.6±5%
Coil resistance (ohms)375±5%
Open circuit sensitivity (V/m/s)28.8±5%
Harmonic distortion ( % )≦0.2
Typical spurious Frequency ( Hz )≧240
Moving Mass ( g )11.3
Max.coil excursion p-p (mm)4
Max.tilt angle20º
Element Diameter (mm)25.4
Element Height (mm)36
Element Weight (g)86
Operating Temperature( ℃ )-40℃ to + 100℃
Warranty Period1 year
All parameters specified herein are rated at a temperature 20℃±2℃.
1- year limited warranty on basic element exclusive of high voltage, lightening or physical abuse.

 

-Other type of geophones are also available : SM-4 Equivalent,  SM-6,  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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