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Geophone Element

  • Geophone 10Hz

Type

EG-10-I ( Equivalent to SM-24 )

Natural frequency ( Hz )

10±2.5%

Open circuit damping

0.25

Damping with shunt 1339ohm

0.6+0%,5%

Damping with shunt 1000ohm

0.686+0%,5%

Open circuit sensitivity (v/m/s)

28.8±2.5%

Sensitivity with shunt 1339ohm(v/m/s)

22.5±2.5%

Sensitivity with shunt 1000ohm(v/m/s)

20.9±2.5%

Coil Resistance (ohm)

375±2.5%

Harmonic Distortion ( % )

0.1

Typical Spurious Frequency ( Hz )

240

Moving Mass ( g )

11.0

Max.coil excursion p-p (mm)

2.0

Max.tilt angle

10º

Element Diameter (mm)

25.4

Element Height (mm)

32

Element Weight (g)

87

Operating Temperature(℃)

-40 to +100


Type

EG-10-II ( Equivalent to SM-4 )

Natural frequency ( Hz )

10±5%

Open circuit damping

0.271±5%

Damping with calibration shunt

0.60±5%

Calibration shunt resistance(ohm)

1400

Open circuit sensitivity (v/m/s)

28.8±5%

Sensitivity with calibration shunt(v/m/s)

22.7±5%

Coil Resistance (ohm)

375±5%

Harmonic Distortion ( % )

0.2

Typical Spurious Frequency ( Hz )

240

Moving Mass ( g )

11.3

Max.coil excursion p-p (mm)

2.0

Max.tilt angle

20º

Element Diameter (mm)

25.4

Element Height (mm)

32

Element Weight (g)

74

Operating Temperature(℃)

-40 to +80


Type

EG-10-III ( Equivalent to GS-32CT )

Natural frequency ( Hz )

10±2.5%

Open circuit damping

0.316±2.5%

Damping with calibration shunt

0.698±2.5%

Calibration shunt resistance(ohm)

1000

Open circuit sensitivity (v/m/s)

27.5±2.5%

Sensitivity with calibration shunt(v/m/s)

19.7±5%

Coil Resistance (ohm)

395±5%

Harmonic Distortion ( % )

0.1

Typical Spurious Frequency ( Hz )

250

Moving Mass ( g )

11.2

Max.coil excursion p-p (mm)

1.5

Max.tilt angle

10º

Element Diameter (mm)

25.4

Element Height (mm)

33.3

Element Weight (g)

89

Operating Temperature(℃)

-40 to +80


Type

EG-10-IV ( Equivalent to GS-20DX 10Hz)

Natural frequency ( Hz )

10±5%

Open circuit damping

0.3

Damping with calibration shunt

0.70±5%

Calibration shunt resistance(ohm)

1000

Open circuit sensitivity (v/m/s)

28

Sensitivity with calibration shunt(v/m/s)

20±5%

Coil Resistance (ohm)

395±5%

Harmonic Distortion ( % )

0.2

Typical Spurious Frequency ( Hz )

200

Moving Mass ( g )

11

Max.coil excursion p-p (mm)

1.5

Max.tilt angle

20º

Element Diameter (mm)

25.4

Element Height (mm)

33

Element Weight (g)

87

Operating Temperature(℃)

-40 to +80

*Other Geophone Type available

( 2Hz,2.5Hz,3Hz,4Hz,4.5Hz,8Hz,14Hz,15Hz,28Hz,30Hz,38Hz,40Hz,60Hz,80Hz,100Hz )