GS201 is a distributed high precision land seismograph adopt the 32-bit high precision Σ -Δ ADC，which can support 4000 channels under 1ms sampling interval. It can be suitable for ten thousand channels 2D and 3D seismic exploration.

The instruments contain industry PC, master station, cross station, acquisition station. The connection structure is very flexible and light.

GS201 Functions and Parameter Indicators

Item: Station

Functions: Supports 32-bit analog-to-digital conversion
Self inspection and testing of various indicators

Parameter Indicators: AD Converter: 32 bit ∑ – △ ADC
Sampling Interval: 4.0, 2.0, 1.0, 0.5, 1/4, 1/8, 1/16, 1/32ms
Preamplifier Gain: 0, 6, 12, 18, 24, 30dB
Noise: 1.2 μ V (sampling interval 1ms, preamplifier gain 0dB)
Single channel power consumption (including data transmission):
working mode 0.25W, standby mode 0.10W
Dynamic range: ＞ 123dB (sampling interval 1ms, preamplifier gain 0dB)
Inter channel suppression:<-123 dB (sampling interval of 1ms, preamplifier gain of 0dB)
Harmonic distortion:<-120dB (sampling interval 1ms, preamplifier gain 0dB)
Gain accuracy:<0.1% (sampling interval 1ms, preamplifier gain 0dB)
Common mode rejection ratio:>125 dB(sampling interval of 1ms, preamplifier gain of 0dB)
Rated differential input impedance: 20KΩ
Full amplitude input: ± 2.5V
Working voltage range (V): 10-15, internal battery or external battery
Working temperature range (℃): -40~85
Inventory temperature range (℃): -40~85
Rated Size: 200*150*70 mm
Weight: ≤ 2.5KG

Practical Applications for GS201:

1. Urban underground space exploration

2. Foundation, roadbed, and foundation engineering testing

Investigation of foundation and roadbed voids and exploration of karst rocks; Classification of foundation soil types and investigation of geological hazards; Layered investigation of physical properties of foundation rock and soil media; Inspection of the effectiveness of foundation reinforcement and the quality of roadbed backfilling and rolling; Survey of bedrock burial depth and hidden geological structures.

3. Tunnel engineering inspection

Tunnel route survey and classification of surrounding rock in the tunnel chamber; Quality inspection of concrete lining; Tunnel bottom inspection and advanced detection monitoring; Vibration monitoring.

4. Operation observation of large and medium-sized reservoirs

Dam hazard detection; Measurement of reservoir sedimentation and inspection of dredging effect; Construction inspection of jetting materials for large and medium-sized water conservancy hubs.

5. Bridge engineering inspection

Survey of pier foundation types; Quality inspection of bridge abutment pile foundation concrete; Bridge vibration monitoring.

6. Environmental and geological hazard detection and evaluation

Landslide, karst, debris flow, goaf, active fault investigation.

Product Technical Advantages

1. Analog to Digital Converter (ADC) 32-bit and Low Noise Circuit Design Techniques At present, the products of major domestic and foreign manufacturers are all 24 bit ADCs. The 32-bit ADC used in GS201-C has higher conversion accuracy, lower noise, and higher dynamic range.

2. Multi stage configuration of preamplifier

Front amplifier gain range: 0dB, 6 dB, 12 dB, 18 dB, 24 dB, 30 dB, 36 dB.

Compared to other instruments at home and abroad, it has more gear options and is more convenient for collecting seismic waves from different geological regions

3. Powerful instrument Self inspection function

The instrument can achieve online self inspection of various parameters, and real-time online monitoring of the internal status of the instrument shell (voltage, temperature).

Self inspection and monitoring can be displayed in real-time on the main control laptop software interface.

4. The overall performance of the instrument reaches or exceeds the international advanced level

The GC201has undergone multiple comparative experiments and tests in the laboratory and field with instruments sold in China by France and the United States, and its main indicators are superior to foreign instruments.

5. The instrument is stable and reliable

All industrial grade chips, military grade connectors

The buffering structure of the instrument has been patented and tested through waterproof, dustproof, and impact resistance tests.

6.Professional customization

According to the special needs of users’ exploration operations, «private customization» can be carried out to adjust parameters and software functions to better meet the professional requirements of users.

Conclusion: The seismic channel with the highest resolution data today.

Structural optimization, capable of collecting the most accurate data in the shortest possible time and requiring very few operators