High-Precision Seismic Refraction Survey Equipment for Geophysical Exploration

This Seismic Refraction Survey Equipment is designed for accurate subsurface investigation, geological mapping, and engineering exploration. It is widely used to detect underground layers, rock structures, faults, and groundwater conditions, making it an essential solution for geophysical survey teams and engineering projects.

Equipped with a 32-bit high-precision ADC and ultra-low noise design, this seismic refraction survey equipment ensures reliable data acquisition with high dynamic range and excellent signal clarity. The optional 2Hz and 5Hz sensors allow flexible adaptation to both shallow and deep refraction surveys, improving detection accuracy in different geological environments.

With IP68 waterproof protection, wide operating temperature range (-40℃ to +70℃), and long battery life up to 40 days, this seismic refraction survey equipment performs stably even in harsh field conditions. Its compact structure, wireless deployment capability, and integrated GNSS positioning system make it easy to operate, helping users reduce field workload and improve survey efficiency.

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Technical Parameters of Seismic Refraction Survey Equipment

Physical
Parameter	Index
Weight	1750g(5Hz)/2450g(2Hz)/Without spike
Size	90mmx100mmx128mm(5Hz)/90mmx100mmx189mm(2Hz)
Working Temperature	-40℃ to+70℃
Waterproof	IP68
Endurance Time@25℃	40 days(24 hours continuously working internal storage)
Charging Time	6.5 hours
Instrument
Parameter	Index
Number of Channels	3 channel △- ∑ADC
ADC	32 bit
Sampling Rate	0.25ms, 0.5ms, 1ms, 2ms, 4ms, 8ms, 10ms, 20ms
Preamplifier Gain	0-24dB (6dB steps)
Low Cut Filter	1Hz,DC removed or turn off
Anti Aliasing Filter	206.5Hz@2ms (82.6%Nyquist frequency) optional Linear phase or minimum phase
OdB @Max Input	2.5Vpeak

Equivalent Input Noise @12dB	0.5uV@0.25ms/0.2uV@2ms/0.14uV@4ms
Instantaneous Dynamic Range @12dB	118.9dB@0.25ms/126.8dB@2ms/130dB @4ms
Total Dynamic Range	145dB
Timing Standard	<1ppm
Time Accuracy	±10μs
Internal Storage	Extended from 32GB to 128GB
Built in GPS	GPS, BDS, GLONASS, GNSS (Concurrent reception) are used for timing and positioning
Sensor
Parameter	Index	Index
Optional Detector	5Hz	2Hz
Natural Frequency(Hz)	5±7.5%	2±15%
DC Resistance(Ω)	1850±5%	6400±10%
Sensitivity(V/m/s)	80±5%	260±15%
Damping	0.7±7.5%	0.7±15%
Distortion	≤0.2%	≤3%
Aliasing(Hz)	≥120	≥90
Valid Frequency Range(Hz)	0.2~1000	0.1~300

Applications of Seismic Refraction Survey Equipment

This seismic refraction survey equipment is widely used in:

Geological structure investigation
Engineering site surveys
Mining and mineral exploration
Groundwater detection and hydrology studies
Road, railway, and infrastructure construction
Fault and subsurface layer analysis

It is especially suitable for projects requiring accurate subsurface data and long-term field deployment.

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Why Choose This Seismic Refraction Survey Equipment?

Traditional geophysical equipment often faces issues such as unstable data, limited battery life, and poor adaptability to harsh environments. This seismic refraction survey equipment addresses these challenges by offering: