The reinforced 14hz geophone (ST-14N) is designed equivalent to SM-4 structure, which is 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.
GS-20DX 14Hz equivalent geohpone is also available.
Click here and download data sheet of 14hz geophones or contact us to get special discounts.
(Equivalent to SM-4,14hz)
(Equivalent to GS-20DX,14hz)
|Natural frequency ( Hz )||14 ± 5%||14±5%|
|Open circuit damping||0.2 ±5%||0.22|
|Damping with Shunt Resistor||0.6 ± 5%||0.51±5%|
|Open Circuit Intrinsic Voltage Sensitivity(V/m/s)||28.8||28.0|
|Sensitivity with Shunt Resistor(V/m/s)||18.2 ± 5%||20.0±5%|
|Coil Resistance (ohm)||375 ± 5%||395±5%|
|Harmonic Distortion ( % )||＜0.2||≤0.2|
|Typical Spurious Frequency ( Hz )||≧240||≥250|
|Moving Mass ( g )||11.6||11.0|
|Max.coil excursion p-p (mm)||2.0||1.5|
|Element Diameter (mm)||25.4||25.4|
|Element Height (mm)||32||33.5|
|Element Weight (g)||74||87.0|
|Operating Temperature(℃)||– 40℃ to + 100℃||– 45℃ to + 100℃|
|Warranty Period||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 or 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, 8Hz, 10Hz, 14Hz, 15Hz, 28Hz, 30Hz, 38Hz, 40Hz, 60Hz,80Hz and 100Hz.