DZS-1 Deep Digital Seismograph

Main Applications

• DZS-1 Deep Digital      Seismograph is a kind of 3D data acquisition device. Mainly utilizes      explosion and huge seismic wave to detect the characteristics and      properties of crustal deep structure; microseismic detection can also be      used in the research of natural earthquakes, 3D seismic survey of oil      field gas, etc, especially for long time unattended testing 
       System consists of data acquisition device, zero time receiver and      built-in geophone. Reflection and Refraction Exploration: Bedrock embedded      depth, shape and regularities of distribution research, hydrological and      engineering and environmental geological basic investigation.

Main Features

• Timing power-on for data      acquisition and power-off upon completion, automatic data storage

• GPS time service,      geographical location targeting

• 3D Observation

• 32-bit A/D converter,      high precision and high dynamic range can be reliably guaranteed

• Low-noise design, system      noise is lower than 1μV

• PDA or laptop computer      operation

• Industrial CF card data      storage, safe and reliable

• Small-sized, water-proof,      shock-proof, anti-interference

Main Technical Specifications

• Signal Using Channels: 3      channels

• A/D Converter: 32 bit

• Sampling Interval: 1 ms,      5 ms, 0 ms, three taps optional

• Preamplifier gain: 1, 32,      64 times optional

• Frequency Response      (Bandwidth): 1~60Hz

• Conformity of Amplitude      between Channels: smaller than 5%

• Phase Difference between      Channels: Less than 0.1ms

• Crosstalk Suppression      between Channels: Greater than 100 dB

• Dynamic Range: no less      than 125 dB

• Time Stability: 5×10-8

• CF Card Capacity:      Industrial 4G

• Water-Proof: 1 m

• Working Temperature: -20℃~40℃

• Power Supply: +7.2V23AH      and -7.2V5.2AH

• Volume: Diameter      170mm;Height 160mm

• Power Consumption: in      operation: 130 mA; on standby 25 mA

• Weight: 5.7 kg

• Starting-up timing range      is 7 days maximum. Maximum 30 power-on / power-off time intervals in      duration.

• Power Supply: Use lithium      cell for power supply. Can meet normal working power supply within 7 days      for whole machine; daily time span for data acquisition is calculated as      15 hours. Regular starting-up and shut-down timing can be adopted.      Power-on for sampling when required, power-off upon sampling completion.

• Documentation: One data      file can be formed at each sampling, and every file contains the following      texts: instrument number, station index number, sampling rate,      amplification times, time synchronization time before GPS, sampling stat      time, sampling stop time, synchronization time after GPS, GPS latitude,      GPS longitude, GPS elevation, voltage before lithium cell, voltage after lithium      cell, sampling point data.

• Length of Data File Name,      8-Bit: The first 6 digits for station index number, the 6 digits for file      name (01, 02, ^30)

• Development of PC      software sampling VC 6.0, which can be used for WINXP system

• Adopt USB 2.0 interface      for data transmission with PC

• With PDA, easy for field      work; PDA is to complete parameter setting of field work (sampling time      synchronization, time synchronization, GPS information acquisition and      input, sampling time interval setting, etc.)

• Both PC and PDA have      functions for clearing data on FD card

• Built-in Geophone: 2Hz      Ground Three-Component Geophone, Qty: 1

• Under-voltage Indication      Function

DZS-1 Zero Time Receiver

• Receive GPS clock,      geographic information, elevation signal, also indicate

• minute and second pulse      signal output of clock signals

• Time Signal Record of      Detonator Explosion Wire-Break; Lock the current time by leading edge of      wire-break signal (lock on the display, accurate to ±0.0001 seconds, and      store the time together with geographic information, elevation value)

• 800 time and geographical      information can be recorded.

2Hz Three-component Geophone (at 20℃)

• Free-Running Frequency      (Hz): 2±10%

• Coil Resistance: 6040±5%

• Sensitivity (V/cmS-1):      2±10%

• Damping Coefficient:      0.7±10%

• Internal Resistance:      5800±5%

• Insulation Resistance:      (MΩ): greater than 10