Sensor Sm-6/H-B Style 4.5Hz Geophone

Product Description

Sensor SM-6/H-B style 4.5Hz Geophone( P/N: ST-4.5B) is a low distortion geophone with high sensitivity of 80.0V/m/s. The SM-6/H-B style 4.5Hz Geophone( P/N: ST-4.5B) can be supplied for vertical and horizontal orientation, which is an ideal choice for the shear-wave horizontal elements, partnering the ST-4.5B vertical sensitivity geophone in a 3-component package.
- High open circuit intrinsic voltage sensitivity of 80.0V/m/s.
- Low harmonic distortion no bigger than 0.3%.
- Work at the direction of Vertical, Horizontal or Three component structure.
- Rugged construction with precious-metal, rotating-coil contacts.
- Suitable for vibration monitoring.
- 3-year limited warranty on basic elements exclusive of high voltage, lightning or physical abuse.

Type	ST-4.5B(Equivalent to SM-6/H-B 4.5Hz)
Natural frequency ( Hz )	4.5±0.5
Open Circuit Damping	0.65±10%
Coil resistance (ohms)	3500±5%
Open circuit sensitivity (V/m/s)	80±5%
Harmonic distortion ( % )	<=0.3
Moving Mass ( g )	11.3
Max. coil excursion p-p (mm)	4
Max. tilt angle	5º
Element Diameter (mm)	25.4
Element Height (mm)	36
Element Weight (g)	86
Operating Temperature( ºC )	-40ºC to + 100ºC
Warranty Period	3 years
All parameters specified herein are rated at a temperature 20ºC±2ºC. 3- year limited warranty on basic element exclusive of high voltage, lightening or physical abuse.

- Regular 4.5Hz geophone with sensitivty 28.8V/m/s also available.
- High sensitivity geophone 2Hz with sensitivity 260.0V/m/s also available.
- 3C geophone 4.5Hz with sensor options of ST-4.5N, ST-4.5A or ST-4.5B also available.
- GS One style geophone sensor or land cased geophone also available.
- Omni Geophone 14Hz also available.

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