WZG-6B/12A MASW Seismography for City Engineering
WZG-6A/12A seismic survey system is a 24-bit wave velocity tester, under Windows Operation System, based on WZG-24 engineering seismograph. It features multiple function, high precision, high speed, high reliability and fine expansibility. Industrial PC or notebook PC is required to collect data through USB interface; built-in rechargeable battery ensures the instrument to work for over 8 hours. Seismic source for testing may be hammer, electric spark or explosion, extremely fitted for sheared wave velocity test, surface wave exploration, pier foundation test, ground micro-tremor measurement, seismic imaging, shake measurement, and refraction or reflection survey.
| • Wave speed (sheared wave) survey |
| • Transient multifold Rayleigh wave prospecting |
| • Multi-wave high density seismic imaging |
| • Shallow refraction survey |
| • Foundation pile inspection |
| • Civil engineering quality detection |
| • Site constant shake survey |
| • Shake-to-blasting survey |
| • 24-bit A/D---- Maximum sampling rate is 10μs and 50μs for 3-channel and 6-channel operation respectively. |
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• Perfect display of original signals---- Fine amplitude consistency and phase consistency, super-low distortion, advanced high-cut filter with suppression more than 72dB (cut point changes according to sampling frequency, without false frequency). |
| • High-speed data transferring---- Data collection device and industrial PC (or notebook PC) are designed with USB ports, performance are much higher than other printer ports; sampling and data transferring can carry out simultaneously, owing to the advanced hardware. |
| • Trigger signal is available at any time to get into sampling process, for background noise is always being monitored. |
| • Powerful software---- Windows Operating System supports data sampling in various kinds of seismic working modes (sheared wave velocity test, surface wave exploration, pier foundation test, ground micro-tremor measurement, seismic imaging, shake measurement, and refraction or reflection survey, etc). |
| • Advanced technologies make swift display and fast roll possible---- Channel number to be displayed on the screen is defined by the user, maximum 128 channels; support convenient amplitude balance display and clear static time label line display. |
| • Flexible configuration, easily extendable---- Both DOS and WINDOWS are optional. |
| • Reasonable configuration---- Featuring shake proof, waterproof and dust proof. |
| Channel | 6/12 channels |
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| Sampling points |
1024, 2048, 4096, 819, 16384 1M and multi-notch options for ground micro-tremor |
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| Sampling rate |
10μs, 25μs, 50μs, 100μs, 200μs, 500μs, 1ms, 2ms, 5ms, 10ms, 20ms; ground micro-tremor is 1ms~200ms, multi-notch |
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| A/D converter | 24bit | |
| Signal stack enhancement | 32bit | |
| Dynamic range | 140dB | |
| Band-pass width | 0.1Hz~4000Hz | |
| Noise | 1μV, full frequency | |
| Amplitude consistency | ± 0.2% | |
| Phase consistency | ± 0.01ms | |
| Distortion | ± 0.05% | |
| Time delay | 0~9999ms | |
| Data format | SEG-2 | |
| Working temperature | 0°C~+50°C, 90%RH | |
| Storage temperature | -20°C~+60°C | |
| Power supply | DC12V 0.8A (built-in rechargeable battery DC12V 8AH) | |
| Dimension | 325mm * 235mm * 185mm |
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