DSHS-1 Deep Digital Seismograph

Main Applications

l Long time micro-seismic exploration without guarding

l Three-dimensional earthquake detection for oil gas and coal resources

l Nature earthquake research

l Roadbed, dam, side slope detection (nature surface wave)

Main Features

l Automatic time switch, acquire storage data;

l GPS timing and locating

l Not only work alone but also make up 3D observation;

l Controlled by PDA or computer

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°C~40°C

· 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

DSHS-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°C)

· 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