Geophone 100hz Seismic Sensors 2hz or 4.5hz Geophone Sensor and geophone strings

SPECIFICATIONS OF 10Hz FREQUENCY GEOPHONE ELEMENT

Parameter\\type name

GD-ONE

GD-10

GD-20HP

GD-24HP

GD-32

GD-32CT

Natural Frequency (Hz) 

10±3.5%

10 2.5%

10 2.5%

10 2.5%

10 2.5%

10 2.5%

Typical spurious frequency(Hz)

≥25

≥240

≥250

≥240

≥250

≥250

Harmonic distortion(%)

≤0.1

≤0.075

≤0.1

≤0.1

≤0.1

≤0.1

Open circuit damping

0.7 7.5%

0.68 5%

0.30 5%

0.25

0.316

0.316

Open circuit resistance(ohm)

1800 5%

350 3.5%

395 2.5%

375 2.5%

395 2.5%

395 2.5%

Open circuit intrinsic voltage sensitivity (v/m/s)

85.8±3.5%

22.8 2.5%

28 2.5%

28.8 2.5%

19.5 2.5%

27.5 2.5%

Allowable tilt(°C)

-

15

10

10

10

10

Moving mass(g)

22.8

8.4

11

11

11.2

11.2

Max. Coil excursion p.p (mm)

2.6

1.78

1.5

2

1.5

1.52

Length(mm)

46

30.15

33.5

32

33.3

33.3

Diameter(mm)

32

27.4

25.4

25.4

25.4

25.4

Weigth(g)

175

78

89

87

89

86

Operation temperature range(°C)

-40 to +90

-40 to +70

-40 to +100

-40 to +70

-40 to +100

Warranty period (year)

3