High Frequency Geophone

Application

High frequency 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.

Specification 1. Three component geophone

Type			CDJ-S4	CDJ-S4.5	CDJ-S10	CDJ-S15	CDJ-S28	CDJ-S30	CDJ-S38	CDJ-S40	CDJ-S60	CDJ-S100
			4Hz	4.5Hz	10Hz	15Hz	28Hz	30Hz	38Hz	40Hz	60Hz	100Hz
Natural frequency Fn (Hz)			4±10%	4.5±10%	10±5%	15±5%	28±5%	30±5%	38±5%	40±5%	60±5%	100±5%
Sensitivity G(v/cm/s)			0.28±5%						0.26±5%		0.30±5%	0.25±5%
Coil resistance Rc(KΩ)			380±5%				500±5%		650±5%		1060±5%	1080±5%
Resistance R(KΩ)			345±5%		335±5%	310±5%	415±5%		560±5%		800±5%	1020±5%
Damping coefficient Bt:			0.7±10%		0.58±10%		0.62±10%		0.6±10%			0.5±5%
Harmonic distortion D(%)			≤0.2
Insulation resistance R(MΩ)			≥20
Maximum coil displacement P-P (mm)			2
Suspension weight M (g)			13		13		8.5		8		6.3	5.9
Operating temperature (℃)			-40~+70
Size	Core	Diameter (mm)	φ27.2
		Height (mm)	34								32
		Weight (mm)	85				86				78
	Sheath	W×L (mm)	96
		Height (mm)	80
Weight (kg)			1.2

2. Vertical geophone

Type			CDJ-Z4	CDJ-Z4.5	CDJ-Z10	CDJ-Z15	CDJ-Z28	CDJ-Z30	CDJ-Z38	CDJ-Z40	CDJ-Z60	CDJ-Z100
			4Hz	4.5Hz	10Hz	15Hz	28Hz	30Hz	38Hz	40Hz	60Hz	100Hz
Natural frequency Fn (Hz)			4±10%	4.5±10%	10±5%	15±5%	28±5%	30±5%	38±5%	40±5%	60±5%	100±5%
Sensitivity G(v/cm/s)			0.28±5%						0.26±5%		0.30±5%	0.25±5%
Coil resistance Rc(KΩ)			380±5%				500±5%		650±5%		1060±5%	1080±5%
Resistance R(KΩ)			345±5%		335±5%	310±5%	415±5%		560±5%		800±5%	1020±5%
Damping coefficient Bt:			0.7±10%		0.58±10%		0.62±10%		0.6±10%			0.5±5%
Harmonic distortion D(%)			≤0.2
Insulation resistance R(MΩ)			≥20
Maximum coil displacement P-P (mm)			2
Suspension weight M (g)			13		13		8.5		8		6.3	5.9
Operating temperature (℃)			-40~+70
Size	Core	Diameter (mm)	φ27.2
		Height (mm)	34								32
		Weight (mm)	85				86				78
	Sheath	W×L (mm)	45x55
		Height (mm)	76
Weight (kg)			0.31								247

3. Horizontal geophone

Type			CDJ-P4	CDJ-P4.5	CDJ-P10	CDJ-P15	CDJ-P28	CDJ-P30	CDJ-P38	CDJ-P40	CDJ-P60	CDJ-P100
			4Hz	4.5Hz	10Hz	15Hz	28Hz	30Hz	38Hz	40Hz	60Hz	100Hz
Natural frequency Fn (Hz)			4±10%	4.5±10%	10±5%	15±5%	28±5%	30±5%	38±5%	40±5%	60±5%	100±5%
Sensitivity G(v/cm/s)			0.28±5%						0.26±5%		0.30±5%	0.25±5%
Coil resistance Rc(KΩ)			380±5%				500±5%		650±5%		1060±5%	1080±5%
Resistance R(KΩ)			345±5%		335±5%	310±5%	415±5%		560±5%		800±5%	1020±5%
Damping coefficient Bt:			0.7±10%		0.58±10%		0.62±10%		0.6±10%			0.5±5%
Harmonic distortion D(%)			≤0.2
Insulation resistance R(MΩ)			≥20
Maximum coil displacement P-P (mm)			2
Suspension weight M (g)			13		13		8.5		8		6.3	5.9
Operating temperature (℃)			-40~+70
Size	Core	Diameter (mm)	φ27.2
		Height (mm)	34								32
		Weight (mm)	85				86				78
	Sheath	W×L (mm)	45x55
		Height (mm)	76
Weight (kg)			0.31								0.31

Feature

With great parameter consistency and firm structures, high frequency geophones feature good tightness and light weights. The output of each geophone is separate, with high sensitivity, little distortion, reasonable damping coefficient and high resolution, capable of satisfying multicomponent seismic data collection requirements. High frequency geophones are widely used in public facility safety monitoring, such as bridges and railway tunnels, for risk prospecting.

Related Products

Inquiry Form

China Geological Equipment Group Co., Ltd.

Add.: 5th Floor, Botai Mansion, No. 221 Wangjing Xiyuan, Beijing 100102

Contact Us:
Tel: +86-510-83769831

Other products