Falmouth Scientific, Inc.

Current Meters

ACM-PLUS-7000 with Optional Integrated CTD and 5-ton Frame

ACM-PLUS-7000 with Optional Integrated CTD and 5-ton Frame

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
    Download Product Brochure
    Download UPDATED Product Manual


  • ACM-WAVE-PLUS – Wave Height & Direction Meter with built-in ACM; capable of burst sampling and long-term averaging
    Download Product Brochure
  • Moored Profiler 3D acoustic current meter (ACM-PLUS-MP)
    – Separate velocity head is less sensitive to currents caused by profiler equipment
    – Contact FSI for details

 

190 Fingers

Technology & Benefits

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 Notes & Briefs:

Buoy-Mounted Current Meter (Download)
ACM Total Shipboard Solution (Download)
AN2013002- Zero Velocities for ACM-PLUS using ACMProPlus (Download)
AN2012002RA – ACM-PLUS Firmware Upgrade Procedure (Download)
AN2013001- ACM-PLUS Housing and End Cap Assembly Procedure (Download)

 

ACM-PLUS-MP for Moored Profilers

ACM-PLUS-MP for Moored Profilers

ACM-PLUS-200 shown in standard 1.5-ton Frame

ACM-PLUS-200 shown in standard 1.5-ton Frame

ACMProPlus Dashboard

ACMProPlus Dashboard