Portable Geological Geophone Geophone String For Vibration Surveying

Product Overview

Description

Portable Geological Geophone Geophone String For Vibration Surveying

Description

 

CDJ Series Digital Seismic Sensor (Geophone) are available frequencies from 1Hz to 100Hz vertical and horizontal direction, and geophone-consisted three-component geophones, borehole geophone, tomographic imaging geophone series with stable performance, high fidelity and consistent quality in oil, gas exploration and other fields.

 

 

Applications and Features

1~3Hz geophones applied for deep seismic prospecting, natural earthquake surveillance and prediction, pulse and microseismic measurement for bridge and highways, etc.
4~100 Hz widely used to seismic prospecting of petroleum, coal, metallurgy, defense engineering and etc.
High sensitivity, low-distortion, reasonable damping coefficient, good linear response, good parameter conformity, higher resolution and excellent waterproof property.
Small-sized, easy to install, easy to operate, large ambient temperature range, can meet the demand of multi-wave component seismic data acquisition technology.

 

 

Medium–High Frequency (vertical and horizontal) Geophones
Parameter\\type name			CDJ-Z/P4	CDJZ/P4.5	CDJ-Z/P10	CDJ-Z/P15	CDJ—Z/P28		CDJ-Z/P30		CDJ—Z/P38
Natural Frequency (Hz)			4±10%	4.5±10%	10±5%	15±5%	28±5%		30±5%		38±5%
Sensitivity G (v/cm.s-1)			0.28±5%								0.26±5%
Coil Resistance Rc(Ω)			365±5%		365±5%	365±5%	500±5%		500±5%		650±5%
Internal Resistance (Ω)			345±5%		335±5%	310±5%	415±5%		415±5%		560±5%
Damping Coefficient Bt			0.7±10%		0.58±10%	0.58±10%	0.62±10%		0.6±10%		0.6±10%
Harmonic Distortion D			≤ 0.2
Insulating Resistance Ri (MΩ)			≥ 20
Coil’S Maximum Displacement P-P(mm)			2
Suspension Mass( g )			13.2		12.8		8.6				7.9
Working Temperature (°C)			— 40 ~ + 70
Weight ( g )			255

 

 

 

Medium–High Frequency (vertical and horizontal) Geophones
Parameter\\type name			CDJ-Z/P40	CDJ-Z/P60	CDJ—Z/P80	CDJ—Z/P100
Natural Frequency (Hz)			40±5%	60±5%	80±5%	100±5%
Sensitivity G (v/cm.s-1)			0.26 ±5%	0.3 ±5%	0.25 ±5%	0.25 ±5%
Coil Resistance Rc(Ω)			690±5%	1030 ±5%	735 ±5%	1080 ±5%
Internal Resistance (Ω)			580 ±5%	800 ±5%	685 ±5%	1020 ±5%
Damping Coefficient Bt			0.6 ±10%	0.6 ±10%	0.55 ±10%	0.5 ±10%
Harmonic Distortion D			≤ 0.2
Insulating Resistance Ri (MΩ)			≥ 20
Coil’S Maximum Displacement P-P(mm)			2
Suspension Mass( g )			7.9	5.9	5.5	5.2
Working Temperature (°C)			— 40 ~ + 70
Weight ( g )			255

 

 

Low-Frequency (vertical, horizontal and three-component ) Geophones
Parameter\\type name			CDJ-Z1/P1/S1			CDJ-Z1A/P1A/S1A
Natural Frequency (Hz)			1±10%
Coil Resistance Rc(Ω)			3400±10%			3500±10%
Open Circuit Sensitivity G (v/cm/s)			2±10%			6.7±10%
ClosedCircuit Sensitivity (v/cm/s)			1.83±10%			6.4±10%
Internal Resistance R(Ω)			3100±10%			3300±10%
Open Circuit Damping Coefficient Bt			0.32±10%
Closed Circuit amping Coefficient			0.43±10%
Insulating Resistance Ri (MΩ)			≥ 10
Coil’S Maximum Displacement P-P (mm)			6
Suspension Mass ( g )			770
Working Temperature (°C)			—25 ~ +55
Weight (K g )			8.15	3.4	10	8.15	3.4	10

 

 

Low-Frequency (vertical, horizontal and three-component ) Geophones
Parameter\\type name	CDJ—Z2A/P2A/S2A	CDJ-Z2B/P2B/S2B	CDJ-Z2C/P2C/S2S
Natural Frequency (Hz)	2±10%
Sensitivity G (v/cm.s-1)	1.2±10%	3.5±10%%	2±10%
Coil Resistance Rc(Ω)	1600±5%	13000±5%	6040±5%
Internal Resistance (Ω)	1540±5%	12800±5%	5800±5%
Damping Coefficient Bt	0.7±10%
Harmonic Distortion D	≤ 0.2
Insulating Resistance Ri (MΩ)	≥ 20
Coil’S Maximum Displacement P-P(mm)	3
Suspension Mass( g )	60
Working Temperature (°C)	—25 ~ +55
Geophone Element Weight (K g )	0.25

 

 

Low-Frequency (vertical, horizontal and three-component ) Geophones
Parameter\\type name	CDJ—Z2.5A/P2.5A/S2.5A	CDJ-Z2.5B/P2.5B/S2.5C	CDJ-Z2.5C/P2.5C/S2.5S
Natural Frequency (Hz)	2.5±10%
Sensitivity G (v/cm.s-1)	1.2±10%	3.5±10%	2±10%
Coil Resistance Rc(Ω)	1600±5%	13000±5%	6040±5%
Internal Resistance (Ω)	1540±5%	12800±5%	5650±5%
Damping Coefficient Bt	0.7±10%
Harmonic Distortion D	≤ 0.2
Insulating Resistance Ri (MΩ)	≥ 20
Coil’S Maximum Displacement P-P(mm)	3
Suspension Mass( g )	60
Working Temperature (°C)	—25 ~ +55
Geophone Element Weight (K g )	0.25