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Chongqing Gold M& E Equipment Co., Ltd.
Address:  9F/10,Jintai Building, Nanping, 400060,Chongqing,China

Contact person:Michelle Li
Tel: 0086-023-62794421
Fax: 0086-023-62940030
Mobile/Whatsapp: 0086 15922636015
E-mail: master@hy-industry.com
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CDJ Series Digital Seismic Geophones

1~3Hz geophones applied for deep seismic prospecting, natural earthquake surveillance and prediction, pulse and microseismic measurement for bridge and highways, etc.
Quantity:
  • Gold

Product Description

 ​ 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

Technical Specifications
Table 1
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  0.28±5% 0.26±5%
(v/cm.s-1)
Coil Resistance Rc(Ω) 365±5% 365±5% 365±5% 500±5% 500±5% 650±5%
Internal Resistance 345±5% 335±5% 310±5% 415±5% 415±5% 560±5%
(Ω)
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  ≥ 20
Ri (MΩ)
Coil’S Maximum Displacement P-P(mm) 2
Suspension Mass( g ) 13.2 12.8 8.6 7.9
Working Temperature — 40 ~ + 70
(℃)
Weight ( g ) 255

Table 2
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  0.26 ±5% 0.3 ±5% 0.25 ±5% 0.25 ±5%
(v/cm.s-1)
Coil Resistance Rc(Ω) 690±5% 1030 ±5% 735 ±5% 1080 ±5%
Internal Resistance 580 ±5% 800 ±5% 685 ±5% 1020 ±5%
(Ω)
Damping Coefficient Bt 0.6 ±10% 0.6 ±10% 0.55 ±10% 0.5 ±10%
Harmonic Distortion D ≤ 0.2
Insulating Resistance  ≥ 20
Ri (MΩ)
Coil’S Maximum Displacement P-P(mm) 2
Suspension Mass( g ) 7.9 5.9 5.5 5.2
Working Temperature — 40 ~ + 70
(℃)
Weight ( g ) 255

Table 3









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 2±10% 6.7±10%
G (v/cm/s)
Closed Circuit Sensitivity 1.83±10% 6.4±10%
(v/cm/s)
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  ≥ 10
Ri (MΩ)
Coil’S Maximum Displacement P-P (mm) 6
Suspension Mass ( g ) 770
Working Temperature (℃) —25 ~ +55
Weight (K g ) 8.15 3.4 10 8.15 3.4 10

Product Description

Technical Specifications
Table 4

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  1.2±10% 3.5±10%% 2±10%
(v/cm.s-1)
Coil Resistance Rc(Ω) 1600±5% 13000±5% 6040±5%
Internal Resistance 1540±5% 12800±5% 5800±5%
(Ω)
Damping Coefficient Bt 0.7±10%
Harmonic Distortion D ≤ 0.2
Insulating Resistance  ≥ 20
Ri (MΩ)
Coil’S Maximum Displacement P-P(mm) 3
Suspension Mass( g ) 60
Working Temperature —25 ~ +55
(℃)
Geophone Element Weight (K g ) 0.25

Table 5
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  1.2±10% 3.5±10% 2±10%
(v/cm.s-1)
Coil Resistance Rc(Ω) 1600±5% 13000±5% 6040±5%
Internal Resistance 1540±5% 12800±5% 5650±5%
(Ω)
Damping Coefficient Bt 0.7±10%
Harmonic Distortion D ≤ 0.2
Insulating Resistance  ≥ 20
Ri (MΩ)
Coil’S Maximum Displacement P-P(mm) 3
Suspension Mass( g ) 60
Working Temperature —25 ~ +55
(℃)
Geophone Element Weight (K g ) 0.25

Table 6
Low-Frequency (vertical, horizontal and three-component ) Geophones
Parameter\type name CDJ—Z3A/P3A/S3A CDJ-Z3B/P3B/S3B CDJ-Z3C/P3C/S3S
Natural Frequency (Hz) 3±10%
Sensitivity G  1.2±10% 3.5±10% 3±10%
(v/cm.s-1)
Coil Resistance Rc(Ω) 1600±5% 13000±5% 6040±5%
Internal Resistance 1540±5% 12800±5% 5650±5%
(Ω)
Damping Coefficient Bt 0.7±10%
Harmonic Distortion D ≤ 0.2
Insulating Resistance  ≥ 20
Ri (MΩ)
Coil’S Maximum Displacement P-P(mm) 3
Suspension Mass( g ) 60
Working Temperature —25 ~ +55
(℃)
Geophone Element Weight (K g ) 0.25

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