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

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• 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.

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• 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