Description
Digital seismic recording system is used in standalone mode or within the scope of automated monitoring systems for conducting seismic and seismological research, onshore and offshore works, at sea bottom and on ice, using the methods of refraction and reflection waves and deep-water seismic sounding against the man-made and natural sources, the earthquake converted-wave method, as well as for geotechnical surveys.
The software is supplied with seismic recording system which enables comprehensive analysis of signals using various algorithms and visualization of the results obtained in two- and three-dimensional format.
Digital seismic recording system is a triaxial seismic receiver and 24-bit measuring module, which ensures high sensitivity of seismic signal recording in three directions and analog-to-digital conversion of signals by independent ADC-s.
Digital seismic recording system has an integrated battery and a nonvolatile memory storage device, which enables the offline recording for subsequent analysis of signals on PC.
The downhole design of seismic station allows to use it in adverse environmental conditions.
Features
Seismic monitoring
Seismograph, STA/LTA detector, wavelet analysis
Registration
Record and playback, viewing historical events
Analysis
FFT analysis, CPB analysis, super-resolution spectrum
Measurement
of signals electric parameters
Display
Signals and results of filtration and analysis
Automation
Regulators, filtration, and formulas
Network
Data communication via Ethernet and Internet
Configuration
Service programs and configuration
Specifications
Measuring channels specifications
Basic configuration of digital seismic recording system includes:
| Direction of measuring axes | Measuring axis Z is orthogonal to the base and directed from the base to the top, and the X and Y axes are parallel to the base |
| Nominal operating frequency range for measuring axes X, Y, Z: | 0,033 – 50 Hz |
| Nominal sensitivity | 2000 V/(m/s) |
| The limits of permissible relative error of measurement along measuring axes X, Y, Z, up to | ±10 % |
| Maximum measured value | 5 mm/sec |
| Integrated noise in the operating frequency range, max. | 80 nm/sec |
| Relative transverse penetration factor at 20 Hz, max. | 1 % |
| Sampling frequency for channels | 50, 100, 250, 500, 1000, 2500 Hz |
| Monitoring the status of primary transducer | |
| Integrated system of electrical excitation of sensing elements (X, Y, Z axes) using the actuator | Axis Z |
| Power supply monitoring of primary transducer | yes |
| Standalone mode | |
| Standalone operation, min. | 10 hrs |
| Full charge time of internal battery | 18 hrs |
| Battery type | Lead |
| Internal non-volatile memory | 32 Gb |
| Time of recording to internal memory card at 500 Hz sampling frequency | Over 1000 hrs |
| Synchronization parameters | |
| Synchronization type | GPS or PTP (IEEE1588) |
| Clock accuracy | 0,1 ррm |
| General specifications | |
| Power supply voltage | 9…18 V |
| Power consumption | 4 W |
| Data interface | Ethernet and USB 1.1 Full Speed |
| Recorded data format | ANA/ANP conversion to CSV and SEG-Y format by means of Software |
| Dust and moisture protection class | IP68 |
| MTBF | 10 000 hrs |
| Average service life | 10 years |
| Weight (without panel), max. | 6,5 kg |
| Dimensions (without panel), max. | base diameter: 170 mm height: 350 mm |
| Operating temperature range | −20…+60 °С (offline product version) −40…+60 °С (stationary product version) |
Basic configuration of digital seismic recording system includes:
- Digital seismic recording system with an integrated seismic receiver;
- receiver for GLONASS/GPS synchronization;
- USB cable;
- integrated battery and power adapter;
- integrated memory card for signals recording in offline mode of operation;
- CD with software;
- set of operational documentation.
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