Falmouth Scientific HMS-621-LITT CHIRP, Sub-bottom profiling applications in diverse sediments in shallow water environments require compact tools as well as multiple frequency bands to support a variety of survey requirements. The HMS-621 CHIRPceiver LittTM and transducer arrays fill this wide range of survey needs. The user selectable frequency bands supported by the HMS-621 include standard LF (1KHz-10KHz), or HF (8KHz-23KHz).

Portable Low-Frequency Acoustic Seismic Systems

Low-frequency acoustic signals provide superior sub-bottom signal penetration vertically through coarse sand, gravel tills, and other difficult-to-penetrate sediments.
Small component size, portability, and low power requirements make this a valuable tool for any survey platform.

Available in Single Source, Dual Source, or Low Frequency Source configurations

Applications:

• Cross River Survey for Bridge Construction
• Dam Site Surveys
• Bedrock Investigation
• Cross-River Pipeline Construction Surveys
• Geotechnical Site Investigation
• Coastal Engineering
• Ability to correlate seismic data with land based surveys

FEATURES/BENEFITS

• Narrow-band 70-700 Hz (100 Hz peak) pulse provides bottom penetration through many sediment types
• Rugged, lightweight transducer platform provides stable operation in adverse sea-state conditions
• Flexible portable transceiver unit optimizes system for a wide range of sediments
• User-selectable trigger or external trigger
• Low-noise pre-amp with hogh/low pass filters and gain control
• Portable power supply operates from 110 or 220 VAC of less than 1 KWatt for single, 2 KWatt for dual
• Battery Power Option Available
• NO GENERATOR NEEDED
• Air Cavity is Totally Sealed
• NO AIRCOMPRESSOR NEEDED
• Oil-filled hydrophone streamer cable incorporates a 7-meter multi-element active section
• 35-meter deactivation switch
• Single or Dual Source Transducer Systems
• Low Frequency Source Available