WZG-24A/48A engineering seismograph series

Building base, roadbed and foundation engineering detection 
Cavity survey, cavern survey 
Quaternary overburden layer delamination 
Foundation soil type and dangerous geology body survey 
Foundation soil medium physical property delamination survey 
Foundation stabilization and roadbed backfill rolling survey 
Bedrock depth and concealed geology structure prospecting 
Tunnel construction detection

Product Descripation:

Our institute makes the engineering seismograph by referring to other advanced seismograph home and abroad. It is true 24-bit and for Chinese WINDOWS. It is not only based on our designing experiences, but also adopt latest electronic technique and design ideal. It is characterized with multi-function, high accuracy, high speed, reliable data and good expandability.
 

Exciting source can be Hammer, spark or explosion. Exploration depth ranges from a few meters to several hundred meters, and greater deep seismic data can be gained by using time-lapse function. It is applicable for seismic reflection survey, seismic refraction survey, seismic surface wave method, foundation pile inspection, micro-seismic survey, seismic image, shake measurement, and wave speed (secondary wave) testing, is extensively used in hydrogeology, electric power, railway, bridge, urban architecture, traffic and other engineering geology prospecting. The seismograph also can be used for petroleum, coalfield, uranium ore, ground water and other resource exploration..

 Functions

Transient multifold Rayleigh wave prospecting

Shallow reflection survey

Shallow refraction survey

Wave speed (secondary wave) survey

Mutil-wave high density seismic reflection

Foundation pile inspection

Civil engineering quality detection

Site constant micro-tremor survey

Shake blasting survey

Applications

Building base, roadbed and foundation engineering detection

Cavity survey, cavern survey

Quaternary overburden layer delamination

Foundation soil type and dangerous geology body survey

Foundation soil medium physical property delamination survey

Foundation stabilization and roadbed backfill rolling survey

Bedrock depth and concealed geology structure prospecting

Tunnel construction detection

Tunnel line survey and wall rock classification

Concrete lining quality detection

Tunnel bottom detection and leading exploration

Tremor monitoring

Large and medium reservoir monitoring

Dykes and dam incipient fault detection

Reservoir sedimentation survey and exclusion sedimentation quality inspection

Large and medium dam jackstone inspection

Bridge engineering inspection

Bridge pier foundation inspection

Bridge pier concrete inspection

Bridge tremor inspection

Environmental and geologic Engineering hazard detection and appraisal

Landslide, karst, mud and stone flow, dig-out area, active fault and other detection

Features

Fast sampling----true 24-bit A/D, minimum sampling interval: 50μs for 24 channel.

Rendering original signal perfectly----perfect amplitude and phase consistency, low distortion, band outside shearing better than 72dB (shearing frequency point changing with sampling frequency automatically, removing alias completely).

High-speed data transfer----Transmitting data by USB port between internal industrial PC and data collector. Advanced hardware make the sampling and transferring data simultaneously.

Technical specifications:

Channel: 6/12/24/48

Sample stations:

　1024, 2048, 4096, 8192, 16384

　Micro-seismic survey, 1M sampling, several notches

Sampling frequency:

　10μs, 25μs, 50μs, 100μs, 200μs, 500μs, 1ms, 2ms, 5ms, 10ms, 20ms

　Micro-seismic survey: 1ms～200ms, selectable

A/D converter: 24-bit

Signal stack and amplification: 32 bit

Dynamic range: 144dB

Frequency pass bands: 0.1Hz～4000Hz

Noise: 1μV(full-frequency)

Amplitude consistency: ±0.2%

Phase consistency: ±0.01ms

Lapse-time: 0～9999ms

Host computer (Industrial PC)

　PIII 533MHz

　EMS memory: 128M

　Disk: no less than 40GB

　CD-ROM: interior

　Display: 800 600 VGA LCD (TFT true colour)

　Input: Chinese character tablet, small keyboard, photoelectric mouse

　Port: double serial port, one parallel port, double USB port, mouse port, 

　keyboard port

　Flash-Memory: 32M

Data format: SEG-2

Software package: 

　Shallow reflection software

　Rayleigh wave software

　Micro-seismic collecting software

　High density and high resolution lateral section survey transaction software

Operating temperature: -10℃～ +50℃, 90%RH

Memory temperature: -20℃～60℃

Power: DC 12V 4A (5.5A at 48 channel)

Size: 400mm×310mm×180mm

Powerful software function----sampling software under WINDOWS supports all kinds data acquisition of seismic methods (shallow reflection, refraction, secondary wave speed testing, micro-seismic survey, high density image and other application). Data displaying and rolling screen are very quick by using advanced graphic technique. Channel on the screen is adjustable, 128 channel maximum.
 

Industrial PC configuration----PIII 533MHz, 128M memory, 40G harddisk, interior CD-ROM, 800 600TFT true color LCD, Chinese character tablet, small keyboard, photoelectric mouse, 32M Flash-Memory, double serial port, one parallel port, double USB port, mouse port, keyboard port. Seismic data collecting and transacting is convenient.

Configuration and expansibility----DOS or WINDOWS software available. Instrument can be upgraded to 48 channel seismograph by purchasing data collecting card and software
 

Stack survey support----Combined with our WZKD-1 electric stack switcher, stack survey can be realized efficiently.

Reasonable configuration---- anti-shake, damp-proof and dust-proof design.