2HZ / 2.5HZ Seismic Sensing Geophone

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Website: http://cgeg-exploration.com/8-4-3-1-seismic-sensing-geophone.html

Application

2Hz/ 2.5Hz seismic sensing geophones are mainly used for deep seismic observation, advanced prospecting, natural earthquake investigation, measuring and monitoring of micro-vibration of bridges, dams, railways and highways etc.

Specification1. 2Hz seismic sensing geophone

Type

CDJ-Z2A

CDJ-P2A

CDJ-S2A

CDJ-Z2B

CDJ-P2B

CDJ-S2B

CDJ-Z2C

CDJ-P2C

CDJ-S2C

Type A 2Hz vertical geophone

Type A 2Hz horizontal geophone

Type A 2Hz three-component geophone

Type B 2Hz vertical geophone

Type B 2Hz horizontal geophone

Type B 2Hz three-component geophone

Type C 2Hz vertical geophone

Type C 2Hz horizontal geophone

Type C 2Hz three-component geophone

Natural frequency Fn (Hz)

2±10%

Sensitivity G(v/cm/s)

1.2±10%

3.5±10%

2±10%

Coil resistance Rc(KΩ)

1600±5%

13000±5%

6040±5%

Resistance R(KΩ)

1540±5%

12800±5%

5800±5%

Damping coefficient Bt:

0.7±10%

Harmonic distortion D(%)

≤0.2

Insulation resistance R(MΩ)

≥20

Maximum coil displacement P-P (mm)

Suspension weight M (g)

Operating temperature (℃)

-25~+55

Size

Core

Diameter (mm)

φ38.5

Height (mm)

Weight (mm)

0.25

sheath

W×L (mm)

50x60

55x68

128

50x60

55x68

128

50x60

55x68

128

Height (mm)

134

Weight (kg)

0.48

0.5

2.35

0.48

0.5

2.35

0.48

0.5

2.35

2. 2.5Hz seismic sensing geophone

Type			CDJ-Z2.5A	CDJ-P2.5A	CDJ-S2.5A	CDJ-Z2.5B	CDJ-P2.5B	CDJ-S2.5B	CDJ-Z2.5C	CDJ-P2.5C	CDJ-S2.5C
			Type A 2Hz vertical geophone	Type A 2Hz horizontal geophone	Type A 2Hz three-component geophone	Type B 2Hz vertical geophone	Type B 2Hz horizontal geophone	Type B 2Hz three-component geophone	Type C 2Hz vertical geophone	Type C 2Hz horizontal geophone	Type C 2Hz three-component geophone
Natural frequency Fn (Hz)			2.5±10%			2.5±10%			2.5±10%
Sensitivity G(v/cm/s)			1.2±10%			3.5±10%			2±10%
Coil resistance Rc(KΩ)			1600±5%			13000±5%			6040±5%
Resistance R(KΩ)			1540±5%			12800±5%			5650±5%
Damping coefficient Bt:			0.7±10%			0.7±10%			0.7±10%
Harmonic distortion D(%)			≤0.2			≤0.2			≤0.2
Insulation resistance R(MΩ)			≥20			≥20			≥20
Maximum coil displacement P-P (mm)			3			3			3
Suspension weight M (g)			60			60			60
Operating temperature (℃)			-25~+55			-25~+55			-25~+55
Size	Core	Diameter (mm)	φ38.5			φ38.5			φ38.5
		Height (mm)	47			47			47
		Weight (mm)	0.25			0.25			0.25
	Sheath	W×L (mm)	50x60	55x68	128	50x60	55x68	128	50x60	55x68	128
		Height (mm)	87	87	134	87	87	134	87	87	134
Weight (kg)			0.51	0.5	2.35	0.51	0.5	2.35	0.51	0.5	2.35