DZQ12-2A Engineering Surface Wave Seismometer

  • Application
  • Features
  • Specifications
  • Accessories
  • Download

Description:

DZQ high resolution seismograph can use a hammer, electric spark or explosion as the excitation source, with exploration depth from a few meters to thousands meters, also delay function can be used to obtain deeper underground bottom layer seismic data. widely used in water conservancy, electric power, railways, bridges, urban construction, transportation and other areas of engineering geological exploration, also applies to oil, coal, uranium mining and groundwater exploration and other fields.


Main Application

l  Reflection and Refraction Exploration: Bedrock embedded depth, shape and regularities of distribution research, hydrological and engineering and environmental geological basic investigation.

l  Surface Wave Prospecting: Cover layer investigation; weathering zone investigation; underground cavity and diseased geologic body survey; subgrade, levee, slope disease investigation.

l  High-density Multi-wave Seismic Imaging: Cavity investigation of ground base and subgrade (roadbed), cave surveying, etc.

l  Quality Inspection of Civil Engineering; Bridge pier and building pile foundation detecting, etc.

l  Safety Evaluation of City Blasting Vibration: All kinds of safety monitoring of blasting vibration.

l  Shear Wave Velocity Test: Measurement of rock mass elasticity parameters, etc.

 


Features and Functions

l  Adopt the latest high-speed, high-precision real 24-bit A/D converter. Maximum sampling interval for 48 channels in simultaneous sampling is 31.25us, reaching international advanced level.

l  Not only use the advanced wave filter with ultra-low distortion performance, better than 120 dB, with external suppression (cut-off frequency automatically changes with sampling frequency); meanwhile, various digital wave filters (high, low, band pass wave filters) are set in the software, with their cut-off frequency being set artificially.

l  Brand-new overall structure design, which allows more reasonable view to facilitate the operation.

l  Military Grade PC104 Control Computer P3. Memory: 256MB; 4GB electric hard disk, provide with USB, VGA, PS/2 keyboard interface

l  Based on WinXP operating system, humanized interfacial design, making the system safer and easily use.

l  Adopt engineering plastic cabinet structure design, more suitable for field application

l  Support coverage measurement. Provided with overlaying switch and overlaying cable manufactured by our factory, the application in various reflection, refraction, reflex measurement for field exploration can be facilitated, thus greatly improving the efficiency of field work.

l  Built-in unique instrument detection system. Self-checking acquisition, data computing, self-checking report can automatically generated the output.

l  Field make-and-break test for geophone and jug lines, full waveform noise monitoring

 

 


Main Technical Specifications

l  Computer Configuration: Military Grade PC104 Control Computer P3 (733MHz); Memory: 256MB; 4 GB DOM electric hard disk, Operating System : WinXP

l  Display: 1024x768 dot matrix, high brightness TFT (true color) LCD display

l  Input Device: Equipped with suitable field-use membrane keyboard and touch screen; can also be connected with PS / 2 computer keyboard and mouse; provided with handwriting tablet.

l  Interface: Dual USB interface, PS/2 keyboard, mouse interface etc.

l  Removable Storage: USB disk, or removable hard disk

l  Channels: total channel number is 12, of which 1, 2, 3, 4, 6, 12, 24, 48 channels mode is selectable

l  Sampling Rate: 31.25μs/62.5μs/125μs/250μs/500μs/1 ms/2 ms/4 ms/8 ms/16ms/32ms-400ms several taps

l  Number of Sampling Points: 512, 1024, 2048, 4096, 8192, 16384, etc., maximum record up to 32768 s;

l  Preamplifier Gain: Every six channels as a group, optionally chosen by software: 64 times (36dB), 16 times (24dB), 4 times (12dB), 1times;

l  A/D Converter: Adopt the latest, ultra high speed Σ-Δ24 bit A/D converter;

l  Alias Filter: Automatic tracking along with the sampling rate; -3dB, down to 120dB at the place with 0.216 times of sampling rate; and provided with various digital wave filters, cutoff frequency (at the place with -3dB) if required

l  Frequency Response Range: 0.1Hz~4kHz ; Noise: smaller than 1 μV at full-frequency state

l  Sampling Time Delay: 0~9999ms ; Conformity: amplitude conformity better than ±0.2%;

l  Phase conformity: better than ±0.01ms ; Dynamic range: better than 144dB

l  Signal dropped and enhanced: 32 bit ; Supported Data Format: SEG-2, SEG-Y, CSP optional

l  Processing software: hallow reflection processing software package (WINDOWS interface), refraction processing software package (WINDOWS interface), Rayleigh wave processing software package (WINDOWS interface), blasting, pulsating acquisition and processing software, share wave processing software package(WINDOWS interface); high density seismic imaging acquisition processing software

l  Trigger Mode: Internal and external triggered by hammer switch; triggered via blasting, and electric spark; also triggered by wire-breaking or connecting

l  Clock: annual time clock, recording time is stored to the document vary with the parameters

l  Power Supply: 12V±20% battery-powered; smaller than 4 amps (48 channels, 5 amps when LCD working in extra-brightness).

l  Service environment temperature t: -10~ 50 ; Instrument storage temperature: -2060

 


System Components:

The system consists of acquisition system and processing system

Acquisition system concludes seismograph, geophones, hypocenter, cable and other related accessories,

Processing system includes various methods explained processing software.