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SEISMIC INSTRUMENTS--Miniseis24

APPLICATIONS:

1. Shallow reflected or shallow refracted wave surveying, transient Rayleigh wave surveying, wave speed testing, ground pulsation testing, Small strain foundation integrity testing, elastic wave CT (computed tomography), seismic Imaging, foundation dynamic parameter testing.

Widely used in areas engineering geological surveying, dike surveying, and ground investigations and so on..

FEATURES:

1. Built-in lithium ion battery with 8 hour battery life

2. Light and portable (central unit weighs 4.5 kg), is the world's smallest engineering seismic surveying equipment at present.

3. Built-in scrolling switch for ease of covering multiple reflected wave surveys

4. Contains all shallow seismic surveying functionality

5. Windows 2000 operating system

6. Chinese user interface

7. Water-tight keyboard and mouse buttons

8. Two USB ports

9. Signal edge trigger, TTL trigger synchronization

MAIN SPECIFICATIONS:

Channel No: 24

Sampling Interval: 25 us- 10 ms (selectable)

Bandwidth: 0.1 Hz - 5000 Hz

Programmable Analog Filter

Low cut filter: 10-200 Hz programmable

High cut filter: 500-2000 Hz programmable

Band cut filter: 50/60 Hz

A/D (IFP’s) precision: ΔΣ24 bit

Computational precision: 32 bit

Equivalent noise: 1μV, RFI (at 2.0ms sampling rate)

cross-channel interference: >80dB

harmonic distortion: -114 dB (at 2.0ms sampling rate)

Data Display and Recording:

Main processor: Intel Pentium 500 MHz processor

Memory: 118 MB

Internal hard drive: 10 GB

Monitor: 1024 x 512 8" SVGA

Data transfer: USB

Data storage: SEG2, SEGY, and Geopen data format

System self-test criteria

Static voice sound, cross-channel consistency, cross-channel isolation

Main unit size and weight

Size: 330x180x100mm, weight: 4.5 kg

Environmental tolerances:

Operating temperature: -20 to 50 deg C

Storage temperature: -40 to 70 deg C

Operating humidity: 0 - 95%