FSI - Model HMS-620 ORD -Bubble Gun Systems

Portable Low-Frequency Acoustic Sub-Bottom Seismic Systems

• HMS-620 Single Source
• Ideal for Small Boat or Inland Surveys
• HMS-620D Dual Source
• Higher Source Level, Greater Penetration
• HMS-620LF Low Frequency Source
• Wide 20 – 1700 Hz Energy Spectrum
• Ideal for Multi-Channel Reflection Surveys

• Offshore Wind Turbine and Dam Site Surveys
• Cross River Surveys for Bridge Construction
• Bedrock Investigation
• Pipeline Construction Surveys
• Geotechnical Site Investigation
• Coastal Engineering
• Shallow Gas Hazard Surveys

• Single and Dual Source Systems do not need heavy handling or deployment equipment
• Wide-band 70 - 1700Hz pulse provides bottom penetration through many sediment types
• LF System Source Bandwidth 20Hz – 1700Hz
• Very stable and repeatable source pulse without the need for external timing controllers
• Rugged, lightweight transducer platform provides stable operation in adverse sea-state conditions
• Electromagnetic acoustic source; Contained Air Volume (no air compressor needed)
• Minimal Electric Power Requirements
• Selectable 110 or 220 VAC source of less than 1 KWatt for Single Source, or 2 KWatt for Dual or LF Source
• Flexible portable transceiver unit optimizes system for a wide range of sediments
• Low-noise pre-amp with high/low pass filters and gain control
• User-selectable trigger or external trigger
• Multiple Sources can be synchronized to a common trigger without need for external timing control
• Repeatable Shot-to-Shot Phase and Amplitude Wavelet Correlation > 0.96
• Oil-filled single channel hydrophone streamer cable incorporates a 7-meter multi-element active section
• 35-meter deactivation switches on each hydrophone element enable exportation outside of USA
• Compatible with industry-standard data acquisition software & multi-channel streamers