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Geophone Element

  • GS-20DX Equivalent Geophone

GS-20DX Equivalent Geophone

Type

EG-8-I ( Equivalent to GS-20DX 8Hz )

Natural frequency ( Hz )

8±5%

Open circuit damping

0.38

Damping with calibration shunt

0.71±5%

Calibration shunt resistance(ohm)

1800

Open circuit sensitivity (v/m/s)

28

Sensitivity with calibration shunt(v/m/s)

23±5%

Coil Resistance (ohm)

395±5%

Harmonic Distortion ( % )

0.2

Typical Spurious Frequency ( Hz )

180

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


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


Type

EG-14-I ( Equivalent to GS-20DX 14Hz )

Natural frequency ( Hz )

14±5%

Open circuit damping

0.22

Damping with calibration shunt

0.51±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 )

250

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


Type

EG-28 ( Equivalent to GS-20DX 28Hz )

Natural frequency ( Hz )

28±5%

Open circuit damping

0.27

Damping with calibration shunt

0.552±5%

Calibration shunt resistance(ohm)

1000

Open circuit sensitivity (v/m/s)

39

Sensitivity with calibration shunt(v/m/s)

28±5%

Coil Resistance (ohm)

395±5%

Harmonic Distortion ( % )

0.2

Typical Spurious Frequency ( Hz )

350

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)

100

Operating Temperature(℃)

-40 to +80


Type

EG-40 ( Equivalent to GS-20DX 40Hz )

Natural frequency ( Hz )

40±5%

Open circuit damping

0.37

Damping with calibration shunt

0.576±5%

Calibration shunt resistance(ohm)

1500

Open circuit sensitivity (v/m/s)

42

Sensitivity with calibration shunt(v/m/s)

30.4±5%

Coil Resistance (ohm)

575±5%

Harmonic Distortion ( % )

0.2

Typical Spurious Frequency ( Hz )

380

Moving Mass ( g )

8.2

Max.coil excursion p-p (mm)

1.5

Max.tilt angle

20º

Element Diameter (mm)

27

Element Height (mm)

33

Element Weight (g)

95

Operating Temperature(℃)

-40 to +80


Type

EG-60 ( Equivalent to GS-20DX 60Hz )

Natural frequency ( Hz )

60±5%

Open circuit damping

0.52

Damping with calibration shunt

0.60±5%

Calibration shunt resistance(ohm)

1500

Open circuit sensitivity (v/m/s)

39

Sensitivity with calibration shunt(v/m/s)

27.0±5%

Coil Resistance (ohm)

668±5%

Harmonic Distortion ( % )

0.2

Typical Spurious Frequency ( Hz )

450

Moving Mass ( g )

6.5

Max.coil excursion p-p (mm)

1.5

Max.tilt angle

20º

Element Diameter (mm)

27

Element Height (mm)

33

Element Weight (g)

93

Operating Temperature(℃)

-40 to +80


Type

EG-100(Equivalent to GS-20DX 100Hz)

Natural frequency ( Hz )

100±5%

Open circuit damping

0.45

Open circuit sensitivity (v/m/s)

23

Coil Resistance (ohm)

570±5%

Harmonic Distortion ( % )

0.2

Typical Spurious Frequency ( Hz )

600

Moving Mass ( g )

5

Max.coil excursion p-p (mm)

1.5

Max.tilt angle

20º

Element Diameter (mm)

27

Element Height (mm)

33.5

Element Weight (g)

95

Operating Temperature(℃)

-40 to +70


*Other Geophone Type available

( SM-4 Equivalent,SM-6 Equivalent,SM-24 Equivalent,SG10 Equivalent,GS-32CT Equivalent, GS ONE Equivalent,  2Hz,2.5Hz,3Hz,4Hz,4.5Hz,15Hz,30Hz,38Hz,80Hz)