CDJ-S2/Z2/P2 2HZ Seismic Geophone
CDJ-S2/Z2/P2 2HZ seismic geophone
Application :
it is used for deep seismic survey and advanced prediction ,natural earthquake prediction monitoring and pulsant microseism measurement of bridge ,dam ,road and others as well as safety monitoring .
Characteristic :
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
optional frequency :1HZ-4.5HZ
Medium–High Frequency (vertical and horizontal) Geophones | ||||||||||||
Parametertype 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 |
|||||||||||
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% |
||||||
|
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 |
≥ 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 |
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