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| Place of Origin | Chongqing, China |
| Brand Name | Gold |
| Model Number | GDJ |
4.5Hz Vertical Geophone Horizontal Seismic Sensors
seismic sensors play a crucial role in detecting and monitoring seismic activity, providing important information for disaster management and mitigation, as well as for scientific research and exploration.
Geophones are commonly used in seismology, oil and gas exploration, and civil engineering to detect and measure seismic waves. They are typically deployed in arrays to provide information about the location, depth, and magnitude of seismic events.
The sensitivity of a geophone is typically expressed in terms of its "gain," which is the ratio of the output signal to the input acceleration. The natural frequency of a geophone, which is the frequency at which it resonates, is also an important parameter that determines its performance.
Technical Specification
| Type | GD-4.5 |
| Natural frequency(HZ) | 4.5±0.5 |
| Typical spurious frequency(HZ) | ≥140 |
| Coil resistance(Ω) | 375±5% |
| Open circuit damping | 0.56±8% |
| Open circuit sensitivity(v/m/s) | 28.8±5% |
| Distortion(%) | 0.3 |
| Moving mass(g) | 11.1 |
| Max. coil excursion P.P(mm) | 3 |
| Allowable tilt(°) | 0 |
| Diameter(mm) | 25.4 |
| Length(mm) | 35.5(horizontal),33.9(vertical) |
| Weight(g) | 82.6 |
| Operating temperature | -40 to +80 |
| Limited warranty period(year) | 1 |
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