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High Sensitivity Geophone 4.5Hz

High sensitivity geophone 4.5Hz (P/N: ST-4.5A) is a long coil travel version geophone with high sensivitivy of 100.0V/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-4.5A sensitivity geophone can be supplied for vertial and horizontal orentation, which is an ideal choice for the shear-wave horizontal elements, partnering the ST-4.5A vertical sensitivity geophone in a 3-component package.

● Long travel version of the ST-4.5A geophone.

●Special orientations upon request byond the normal verical and horizotnal options.

● Widely used in industral vibration-mnitoring systems.

● Rugged construction with precious-metal, rotating-coil contacts.

● High open circuit intrinsic voltage sensitivity of 100.0V/m/s.

●1-year limited warranty on basic element exclusive of high voltage, lightening or physical abuse.

Click here and download data sheet of low frequency 4.5hz high sensitivity geophone or contact us to get special discounts.


For any inquiries, please contact with our Marketing Team at or Supporting Team at


High Sensitivity Geophone 4.5Hz Product Parameters


Natural frequency ( Hz )4.5±10%
Coil resistance (ohms)4200±10%
Open circuit sensitivity (V/m/s)100.0±10%
Harmonic distortion ( % )≦0.3
Typical spurious Frequency ( Hz )≧240
Moving Mass ( g )11.0
Max.coil excursion p-p (mm)4.0
Max.tilt angle20º
Element Diameter (mm)25.4
Element Height (mm)36
Element Weight (g)86
Operating Temperature( ℃ )-40℃ to + 100℃
Warranty Period3 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, 5Hz, 8Hz, 10Hz, 14Hz, 15Hz, 28Hz, 30Hz, 38Hz, 40Hz, 60Hz,80Hz and 100Hz.

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