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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 sensitivity 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 vertical and horizontal orientation, 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 beyond the normal vertical and horizotnal options.

● Widely used in industrial vibration-monitoring systems.

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

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

●3-year limited warranty on basic elements exclusive of high voltage, lightning or physical abuse.

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

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Main Parameters for High Sensitivity Geophone 4.5Hz


Natural frequency ( Hz )4.5±0.5
Frequency Response Range(Hz)5Hz to 1000Hz
Open Circuit Damping0.7±10%
Coil resistance (ohms)4100±5%
Open circuit sensitivity (V/m/s)100±5%
Harmonic distortion ( % )≦0.6
Typical spurious Frequency ( Hz )≧160
Moving Mass ( g )11.3
Max. coil excursion p-p (mm)4
Max. tilt angle10º
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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