Falmouth Scientific, Inc. (FSI)
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FSI - Model PLUS -Current, Wave, and Tide Instruments
Members of the PLUS Family come complete with FSI’s Windows-based ACMProPLUS software for system configuration and data download, as well as our ACMPost or WavePost software for graphics display and advanced post-processing. These devices may also be equipped with an optional integrated CTD module, and can optionally be configured to log up to two analog inputs from external sensors (e.g., DO, OBS, Fluorometer, Transmissometer).
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Vector-averaged 3D-Current Speed and Direction, Wave Direction & Height, Tide Measurement .
- Vector-Averaged 3D Current Speed & Direction
- Real-Time Monitoring & Internal Data Logging
- Self-contained, Not Dependent on Reflectors
- Internal Tilt & Compass Correction
- Low-Power Mode for Long-Term Deployments
- Three Depth Ratings -300m, 7000m
Enhanced Design, Performance, & Specifications
ACM-PLUS
- Single-point Acoustic Current Meter
- 3D-Current speed and direction
- Deep (7,000m) and shallow (300m) models
ACM-WAVE-PLUS
- Wave statistics and direction
- 3D-Current speed and direction
- Tide measurement
WAVE-TIDE-PLUS
- Wave statistics
- Tide measurement
- Compact, lightweight, low-maintenance construction
- 3-Axis ACM with excellent low-velocity resolution
- High-accuracy wave data, precise pressure sensor
- Electronic magneto-resistive compass, 2-axis tilt sensor
- Fast Data Sampling; Fast Data Download
- Long-term data logging to 8 GigaByte internal memory
- Real-time data acquisition via optional cable
- Built-in High Accuracy real-time clock
- 5-ton working strength mooring frame standard
- Optional pressure sensor in ACM, or conductivity, temperature, pressure sensor (CTD) may be added

- External Power: 8 to 32 VDC
- Current Draw: 15 mA at 1 Hz sample rate; 80 mA at 10 Hz sample rate; 150 uAmp sleep
- Battery Power: Alkaline 5 D Cell Welded Pack, 10 AHR
- Internal Memory: >8.0GB Standard
- Sample Rate: 10 Hz Maximum for ACM, 5 Hz Maximum for Wave Instruments
- Vector Averaging Period: User Selectable up to 59 Min:59 Sec
- Real Time Clock: Programmable High Accuracy Sampling / Low-power Mode
- Sampling Modes: Continuous, Interval, and Delayed Start (continuous or interval)
- Clock Stability: +/- 2ppm (0-40 degrees C); +/- 4ppm (-40 degrees C to +85 degrees C)
- Optional Input Channels: Two (2) 0-5V DC Input Channels with 12 bit A/D resolution available for external
- sensor input, such as Transmissometer, DO, OBS (Regulated 12 VDC 1.5W
- provided to power external sensors)
- Mooring Frame: 5 Ton 316 Stainless Steel Mooring Frame (Standard)
- 5 Ton 316 Stainless Steel with Mooring Line Clamps (Optional)

