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Instruments for Geophysics and Seismology
Ant-3CN-5S - 3-channel wireless seismic node
The Ant-3CN-5S is a 3-channel wireless seismic node with a selectable 5S geophone, built-in GNSS and IP68 protection for high-precision field acquisition.
It combines low noise, wide dynamic range and long autonomy for exploration, monitoring and demanding geophysical surveys.
The GEOANT Ant-3CN-5S is a 3-channel wireless seismic node designed for high-resolution geophysical acquisition in exploration campaigns, subsurface surveys and field monitoring.
It integrates a 32-bit Delta-Sigma converter, multi-constellation GNSS for positioning and timing, expandable storage and an architecture ready for continuous operation with real-time transmission or periodic 4G data uploads.
Its IP68 enclosure and operating range from -40 C to +70 C allow dependable deployment in demanding environments. The Ant-3CN-5S version includes a selectable 5S geophone and delivers stable response, low distortion and optimized sensitivity for professional seismic work.
- 3 acquisition channels with 32-bit Delta-Sigma ADC
- Sampling rates from 0.25 ms to 20 ms
- Built-in GNSS with GPS, Beidou and GLONASS
- IP68 protection for intensive outdoor use
- Extended autonomy depending on operating mode
General specifications
| Weight | 1750 g excluding spike |
| Dimensions | 90 x 100 x 128 mm |
| Operating temperature | -40 C to +70 C |
| Protection rating | IP68 |
| Charging time | 6.5 hours |
| Operating life at 25 C | 7 days with real-time transmission, 40 days at 24 h/day operation, 20 days with 4G transmission every 10 minutes and 80 days at 12 h/day operation |
Electrical and acquisition
| Channels | 3 channels |
| A/D converter | 32-bit Delta-Sigma ADC |
| Sampling rates | 0.25 ms, 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 10 ms, 20 ms |
| Preamplifier gain | 0 to 24 dB in 6 dB steps |
| Low cut filter | 1 Hz, DC removed or disabled |
| Anti alias filter | 206.5 Hz at 2 ms, selectable linear or minimum phase |
| Maximum input at 0 dB | 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 | Stability below 1 ppm and accuracy of ±10 us disciplined by GPS |
| Storage | Expandable from 32 GB to 128 GB |
| Built-in GNSS | GPS, Beidou, GLONASS and GNSS in single or dual mode |
| Gain accuracy | Less than 1 % |
Selectable geophone
| Natural frequency | 5 Hz ±7.5 % for 5S |
| DC resistance | 13300 ±5 % for 5S |
| Open circuit sensitivity | 230 ±7.5 % for 5S |
| Damping | 0.7 ±7.5 % for 5S |
| Distortion | ≤0.35 % for 5S |
| Spurious frequency | ≥120 Hz for 5S |
| Effective frequency range | 0.2 to 300 Hz for 5S |
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