Product Description
The RC-3C Wireless Node Seismograph, independently developed by RanCheng Group, is an all-in-one seismic instrument integrating sensor, acquisition station, battery, control, storage, wireless transmission, and status indicators. It performs digital signal acquisition, local storage, automatic networking, and high-speed wireless data transfer. With stable performance, low interference, real-time transmission, scalability, compact size, low power consumption, and long operation (over 200 hours), the RC-3C Node Seismograph enhances field data quality and efficiency, especially in complex environments such as rivers, water networks, lakes, highways, and railways.
Technical Parameters
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Physical |
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Parameter |
Index |
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Weight |
1750g(5Hz)/2450g(2Hz)/Without spike |
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Size |
90mmx100mmx128mm(5Hz)/90mmx100mmx189mm(2Hz) |
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Working Temperature |
-40℃ to+70℃ |
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Waterproof |
IP68 |
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Endurance Time@25℃ |
40 days(24 hours continuously working internal storage) |
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Charging Time |
6.5 hours |
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Instrument |
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Parameter |
Index |
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Number of Channels |
3 channel △- ∑ADC |
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ADC |
32 bit |
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Sampling Rate |
0.25ms, 0.5ms, 1ms, 2ms, 4ms, 8ms, 10ms, 20ms |
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Preamplifier Gain |
0-24dB (6dB steps) |
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Low Cut Filter |
1Hz,DC removed or turn off |
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Anti Aliasing Filter |
206.5Hz@2ms (82.6%Nyquist frequency) optional Linear phase or minimum phase |
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OdB @Max Input |
2.5Vpeak |
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Equivalent Input Noise @12dB |
0.5uV@0.25ms/0.2uV@2ms/0.14uV@4ms |
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Instantaneous Dynamic Range @12dB |
118.9dB@0.25ms/126.8dB@2ms/130dB @4ms |
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Total Dynamic Range |
145dB |
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Timing Standard |
<1ppm |
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Time Accuracy |
±10μs |
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Internal Storage |
Extended from 32GB to 128GB |
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Built in GPS |
GPS, BDS, GLONASS, GNSS (Concurrent reception) are used for timing and positioning |
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Sensor |
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Parameter |
Index |
Index |
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Optional Detector |
5Hz |
2Hz |
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Natural Frequency(Hz) |
5±7.5% |
2±15% |
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DC Resistance(Ω) |
1850±5% |
6400±10% |
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Sensitivity(V/m/s) |
80±5% |
260±15% |
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Damping |
0.7±7.5% |
0.7±15% |
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Distortion |
≤0.2% |
≤3% |
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Aliasing(Hz) |
≥120 |
≥90 |
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Valid Frequency Range(Hz) |
0.2~1000 |
0.1~300 |
Applications and Challenges
Ground vibrations are increasingly common due to urbanization and infrastructure development. These vibrations, often as Rayleigh waves, can damage structures, affect sensitive equipment, or impact human well-being. Traditional vibration mitigation methods, like concrete or foam infill, face limitations in cost, effectiveness, and environmental impact.
Seismic acquisition detects and monitors underground structures and resources by generating artificial seismic sources and recording reflected or refracted waves. Applications include oil, gas, coalbed methane, CCUS, geothermal, mining, and engineering surveys.
The RC-3C Node Seismograph addresses common challenges of traditional systems, such as bulky size, high cost, complex deployment, maintenance difficulties, low data quality, and environmental impact. Its compact design, high sensitivity, and three-component measurement capabilities make it suitable for microseismic monitoring, geological exploration, and engineering surveys.
Features
Fully Wireless
No external cables; flexible field deployment.
Node parameters configured wirelessly; real-time data retrieval.
Eliminates cable noise, improving signal quality.
01
Self-Organizing Network
Nodes automatically form a wireless network with the master station.
Works without 4G/5G signals in remote environments.
Wireless range over 1 km; GPS-synchronized or internal clock if GPS unavailable.
02
Scalable and Flexible Deployment
Expandable to thousands of nodes for large-array or "true 3D" surveys.
Radial deployment improves coverage efficiency.
Node density adjustable for source distribution to increase accuracy.
Deployment considers source depth and coverage for precise monitoring and cost efficiency.
03
Extended Functionality
Mobile app support and wireless charging.
Low-power blind acquisition mode for continuous storage over 30 days.
04
Advantages
Each node works independently with GPS and wireless networking, reducing data volume while allowing real-time transfer and interactive processing. Compared with traditional large-array systems, the RC-3C Node Seismograph is more adaptable for microseismic monitoring and field operations in remote or difficult terrain.
Customer Benefits
Using the RC-3C Node Seismograph, field teams can continuously collect data without climbing mountains at night to check lines, reducing workload and improving safety. The wireless setup makes deployment fast and flexible, even in high-mountain or desert areas. With precise monitoring and controllable seismic sources, construction quality and survey efficiency are improved, while environmental impact is minimized. Teams can focus on analysis rather than logistics, making field work safer, faster, and more reliable.
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