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Instruments for Geophysics and Seismology
Ant-1C-2Hz Integrated Single-Component Nodal Seismometer
The Ant-1C-2Hz is an integrated single-component nodal seismometer for high-sensitivity seismic exploration. It combines GNSS synchronization, low power consumption, and wireless charging/data transfer in a compact rugged housing.
Ultra-portable single-component nodal seismometer
The Ant-1C-2Hz is an advanced nodal seismometer designed to streamline seismic exploration, reduce operational complexity, improve survey efficiency, and lower total project cost.
It integrates GPS/Beidou synchronization algorithms, ultra-low-power circuitry, and wireless data/charging technology. With high integration, long operating life, and zero external contacts, it is ready for intelligent or automated deployment in complex terrain and harsh environments.
Its state-of-the-art ADC architecture delivers exceptional dynamic range for micro-vibration detection and supports UAV-assisted surveys above 300 meters AGL.
Application areas
- Seismic zonation and safety assessment
- Shallow geological surveys
- Urban subsurface exploration
- Geothermal exploration
- Coal mine goaf detection
- Exploration for petroleum, natural gas, coal, and non-ferrous minerals
Technical specifications
Physical
| Weight | 630 g (excluding spike) |
| Dimensions | 55 x 55 x 154 mm |
| Operating temperature | -40 C to +70 C |
| Ingress protection | IP68 |
| Operating life at 25 C | 25 days at 2 ms, 24 hrs/day; 50 days at 2 ms, 12 hrs/day |
| Charging time | 3.5 hours |
Performance specifications
| Channels | 1-channel Delta-Sigma ADC |
| A/D converter | 32-bit |
| Sampling rate | 0.25 ms, 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 10 ms, 20 ms |
| Preamplifier gain | 0-24 dB in 6 dB steps |
| Low cut filter | 1 Hz, DC removed or disabled |
| Anti-alias filter | 206.5 Hz at 2 ms (82.6% of Nyquist), selectable linear-phase or minimum-phase |
| 0 dB at max input | 2.5 V peak |
| Equivalent input noise at 12 dB | 0.5 uV at 0.25 ms / 0.2 uV at 2 ms / 0.14 uV at 4 ms |
| Instantaneous dynamic range at 12 dB | 118.9 dB at 0.25 ms / 126.8 dB at 2 ms / 130 dB at 4 ms |
| Total dynamic range | 145 dB |
| Timing accuracy | +-10 us, GPS disciplined |
| Data storage | Expandable from 8 GB to 32 GB |
| Built-in GNSS | Simultaneous GPS/Beidou/GLONASS/GNSS positioning and timing, single or dual mode |
Geophone specifications
| Parameter | 2 Hz | 5 Hz | 10 Hz |
|---|---|---|---|
| Natural frequency | 2 +-15% | 5 +-7.5% | 10 +-3.5% |
| DC resistance | 6400 +-10% | 1850 +-5% | 1800 +-3.5% |
| Sensitivity (open circuit) | 260 +-15% | 76.7 +-5% | 78.7 +-3.5% |
| Damping | 0.7 +-15% | 0.7 +-7.5% | 0.7 +-5% |
| Distortion | <=3% | <=0.1% | <=0.1% |
| Spurious frequency | >=90 | >=170 | >=240 |
| Effective frequency range | 0.1~300 | 0.2~1000 | 0.5~1000 |
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