CDJ Series Digital Seismic Geophones

Product Details:

Place of Origin:	china
Brand Name:	gold
Model Number:	CDJ

Payment & Shipping Terms:

Minimum Order Quantity:	1 piece
Packaging Details:	wooden case
Payment Terms:	TT/LC/DA

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Detailed Product Description

Highlight:	digital seismic geophones

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 ((20℃)

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 (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（℃）	— 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 (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（℃）	— 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 SensitivityG (v/cm/s)	2±10%			6.7±10%
Closed Circuit 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 （℃）	—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
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（℃）	—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 (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（℃）	—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 (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（℃）	—25 ～＋55
Geophone Element Weight (K g )	0.25