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Product Details

Geological Seismograph Geophone Sensor

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

1.1~3Hz geophones applied for deep seismic prospecting, natural earthquake surveillance and prediction, pulse and microseismic measurement for bridge and highways, etc.

2.4~100 Hz widely used to seismic prospecting of petroleum, coal, metallurgy, defense engineering and etc.

3.High sensitivity, low-distortion, reasonable damping coefficient, good linear response, good parameter conformity, higher resolution and excellent waterproof property.

4.Small-sized, easy to install, easy to operate, large ambient temperature range, can meet the demand of multi-wave component seismic data acquisition technology.

Low-Frequency (vertical, horizontal and three-component ) Geophones
Parametertype 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

Table 4

Low-Frequency (vertical, horizontal and three-component ) Geophones
Parametertype 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

Table 5

Low-Frequency (vertical, horizontal and three-component ) Geophones
Parametertype 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

Table 6

Low-Frequency (vertical, horizontal and three-component ) Geophones
Parametertype name	CDJ—Z3A/P3A/S3A	CDJ-Z3B/P3B/S3B	CDJ-Z3C/P3C/S3S
Natural Frequency (Hz)	3±10%
Sensitivity G (v/cm.s-1)	1.2±10%	3.5±10%	3±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