Seismic Geophone Sensor

Perfect for all of your 2-D & 3-D seismic exploration needs with bandwidth from 10 Hz up to 240 Hz

Basically, it's a super low frequency microphone for the ground. Low distortion, combined with excellent specifications, provide high-fidelity data. A geophone works by translating ground movement into voltage, which can easily be read by a microcontroller. The geophone element is designed to offer the highest performance in seismic earthquake exploration based upon field-proven I/O Sensor technology. 

Features:

• Tight specification, low-distortion geophone
• Extended spurious over 240 Hz, allowing full bandwidth at 2-ms sampling
• Sensitivity of 28.8 V/m/s

Frequency

Natural frequency 10 Hz

Tolerance ± 2.5%

Maximium tilt angle for specified Fn 10°

Typical spurious frequency >240 Hz

Distortion

Distortion coil to case velocity with 17.78mm/s (0.7 in/s) p.p. <0.1%

Distortion measurement frequency 12 Hz

Typical distortion (string of 12 in series,measured at 12 Hz) 0.03 %

Damping

Open circuit (typical) 0.25

Damping calibratio- shunt resistance 1,339 Ω

Damping with calibration shunt 0.6

Tolerance with calibration shunt + 5 %, - 0 %

Sensitivity

Sensitivity 28.8 V/m/s (0.73 V/in/s)

Tolerance ± 2.5 %

RtBcfn 6,000 Ω Hz

Moving mass 11 g (0.38 oz)

Max coil excurstion p.p. 2 mm (0.08 in)

Coil Resistance

Standard 375 Ω

Tolerance +/- 2.5 %

Physical Characteristics

Diameter 25.4 mm (1 in)

Height 32 mm (1.26 in)

Weight 74 g (2.6 oz)

Operating temperature range -40°C to +100°C