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Aquatec Group Ltd AQUAscat® 1000S

Aquatec has a long history of innovation and was founded in 1990 by the current managing director as a specialist consultancy in oceanographic design. Since then, the company has established a diverse portfolio of products for the measurement of ocea…

  • Aquatec Group Ltd AQUAscat® 1000S
Aquatec Group Ltd
Aquatec House, Stroudley Road
RG24 8FW Basingstoke
United Kingdom

Description

Aquatec has a long history of innovation and was founded in 1990 by the current managing director as a specialist consultancy in oceanographic design. Since then, the company has established a diverse portfolio of products for the measurement of oceanographic and process parameters, as well as establishing a range of services including instrument and communication design. Suspended sediment measurement has been a core element of our product offering for over 20 years. The AQUAscat range are market leading instruments that use multi-frequency acoustics to observe profiles of suspended sediment concentration up to 10m in range.

Specifications

  • Sediment Range
    Sensitive to a wide range of grain sizes Size inversion typically feasible for 20 μm to 500 μm radius Typically 0.01 g/l to 20 g/l over 1 m, or more over shorter range
  • Frequency
    4 frequencies - 500 kHz, 1 MHz, 2 MHz, 4 MHz
  • Transducers
    Ø10-25mm ceramic discs (beam width according to frequency)
  • Transducer arrangement
    4 fixed transducers
  • Gain
    Software controlled transmitter and receiver gain adjustment
  • Range
    150 cm (typical), up to 10 m at frequencies below 2 MHz depending on options.
  • Transmitted signal
    1 W rms typical transmit CW pulse, pulse length to match cell size.
  • Transmission rate
    128 Hz max pulse rate for each frequency (i.e. 512 pulses per second for four), subject to acoustic range limits. Minimum rate 1 Hz for calibration.
  • Data averaging
    Cell ensembles averaged over time by powers of 2 up to 64 before storage
  • Range cells
    256 cells. 2.5 mm, 5 mm, 10 mm, 20 mm and 40 mm at 1500 m/s speed of sound. Start/end range set by software
  • Burst duration
    Defined by number of profiles requested
  • Burst trigger
    Either external hardware trigger when required or internal software trigger at regular intervals
  • Burst interval
    Internally generated from once every minute to once every 255 minutes, user definable start time of first burst.
  • Trigger output
    A digital output allows triggering of external instruments
  • Power requirement
    8 V to 24 V dc. Typically 1 W when logging, and with standby of typically 1 mW when not logging
  • Battery packs
    Internal alkaline battery pack gives up to 10 days typical deployment. External battery packs available according to deployment needs
  • Disk storage
    Compact Flash (proprietary format). 8 GB standard.
  • Additional sensors
    Built-in temperature and pressure, optional turbidity
  • Data comms
    RS232 up to 115 kbaud; USB 1.1 typically 2-3 Mbaud
  • Housing options
    1000m rated aluminium alloy housing. Greater depths available as custom instruments.
  • Software
    AQUAtalk for AQUAscat for logger interaction AQUAscat toolkit for data processing

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