Falmouth Scientific Instruments

Falmouth Scientific, Inc. (FSI) is a manufacturer of precision instruments for oceanographic applications. The FSI quality program continues to be compatible with ISO 9001, which has led to excellent product reliability.

ACM PLUS

High-accuracy acoustic current meters with vector-averaged current speed and direction ACM-PLUS – user selectable 2D or 3D point velocity measurements with internal compass and tilt correction for deep (ACM-PLUS-7000) or shallow (ACM-PLUS-200) water
Enhanced features:

  • Extended internal memory (2 Gigabytes)

  • Fast data sampling up to 10 Hz

  • Fast data download

  • High accuracy real-time clock

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3D Wave Height & Direction Meter with built-in ACM; burst sampling and long-term averaging (3D-Wave)

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Moored Profiler 3D acoustic current meter (3ACM-SBP-MM) – Separate velocity head is less sensitive to currents caused by profiler equipment 

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Acoustic Phase-Shift Transit-Time Technology:

  • Eight transducers define four acoustic transit-time paths

  • Accurate even near surface and seabed

  • Accurate low- and high-velocity measurement

  • Measures very clear as well as turbid water

  • (no reflectors required)

  • Economical 2 or 3 dimensional point velocity (X,Y converted to N,E using compass/tilt sensors)

  • Internal recording and real-time output

  • Optional CTD for salinity/sound velocity

 

Product Features:

  • Compact, lightweight, low-maintenance construction

  • Simple to operate

  • 2- or 3-axis true cosine response velocity measurement

  • Accurate velocity measurement with excellent low-velocity resolution

  • Built-in compass with 2-axis tilt sensor

  • Temperature measurement capability

  • Extremely long battery life with low-maintenance alkaline batteries

  • Real-time output/display capability

  • Averaged and/or burst data output

  • Long-term data logging to internal flash memory

  • ASCII serial data output via RS-232 or RS-485

  • Built-in real-time clock with on/off power control

  • 1.5-ton working strength mooring frame (optional 5-ton mooring frame)

  • Optional conductivity, temperature, pressure sensor package may be added

  • Optional Analog DC channel inputs for external sensors (e.g. turbidity, oxygen)

  • Choice of epoxy shallow-water or titanium deep-water housings

 

Application Briefs:

ACM Wave PLUS

Features

  • High-accuracy wave data provided by fast sampling (1 to 5Hz) and precise pressure sensor (+/-0.01% FS)

  • Averaged and/or burst data output

  • Internal battery pack and memory provide long deployment capability

  • 3-axis velocity measurement for directional wave calculation

  • 23-meter Operating Depth

  • Optional CTD module for salinity/sound velocity/density

  • Optional inputs for water quality sensors can provide additional environmental data

Wave Tide PLUS

Features

  • Programmable Sampling Frequency,1-5 Hz

  • High Accuracy, +/- 3mm

  • Micro-Machined Silicon Pressure Sensor 0 to 50 psia

  • ± 100 ppm/year Pressure Stability

  • Optional Barometric Pressure Sensor

  • Internal Flash Memory

  • Simultaneous Data Logging and Serial Output via RS-232 or RS-485

  • Windows-based Micro Tide Software for Configuration and Data Acquisition

  • Optional Conductivity/Temperature Sensors

USS110 Structural Monitor

For applications such as:

  • Vibration- and Drilling-Induced Vibration (VIV/DIV) analysis studies

  • Underwater structure motion monitoring for stress analysis

  • Real-time stress data during oil flow line installations

  • Analysis of structural response to stress-inducing events

USS-110 Underwater Structural Stress Monitoring System includes:

  • ADL-536 3-axis Motion Logger

  • Acoustic modem for real-time remote data output

  • Additional input from strain gauges, load cells or other sensors

ADL536 Motion Monitor

For applications such as:

  • Vibration- and Drilling-Induced Vibration (VIV/DIV) analysis studies

  • Underwater structure motion monitoring for stress analysis

  • Real-time stress data during oil flow line installations

  • Analysis of structural response to stress-inducing events

ADL-536 Motion Logger includes:

  • 3-axis acceleration and 2-axis inclination

  • Internal battery and recording for 3-month autonomous operation

  • 3000-meter depth standard

  • Riser pipeline monitoring

HMS620 BubbleGun

Portable Low-Frequency Acoustic Seismic System

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.

HMS620M BubbleGun

Portable Multi-Channel Bubble Gun Seismic System available in single or dual 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

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