Delivery Time:10 days
Certification:ISO

Marshy Geophone Sensor String

Marshy 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

1~3Hz 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

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%
ClosedCircuitSensitivity (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%
ClosedCircuitamping 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 Resistanc