High sensitivity geophone 5Hz(P/N:ST-5NA) is a long coil travel version geophone with high sensivitivy of 80.0V/m/s. The extra coil travel offers an advantage for higher tilt requirements and where larger amplitude signals may be encountered, for example, in industrial vibration monitoring.
The ST-5NA geophone can be supplied for vertial and horizonta orentation, which is an ideal choice for the shear-wave horizontal elements, partnering the ST-5NA high sensitivity geophone in a 3-component package.
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|Natural frequency ( Fn )||5Hz ± 7.5%|
|Open Circuit Damping||0.60 ± 7.5%|
|Coil resistance||1850Ω ± 5%|
|Open circuit sensitivity||80.0 V/m/s ± 5%|
|Typical spurious Frequency||≧130Hz|
|Max.coil excursion p-p||3mm|
|Operating Temperature||-40℃ to + 80℃|
|Warranty Period||2 years|
|● All parameters specified herein are rated at a temperature 20℃±2℃.
● 2-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, 5Hz, 8Hz, 10Hz, 14Hz, 15Hz, 28Hz, 30Hz, 38Hz, 40Hz, 60Hz,80Hz and 100Hz.