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Aquatec Group AQUAscat® 1000L

Suspended sediment in the lab. Ideal for laboratory based sediment research

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 AQUAscat® 1000L
Aquatec Group
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
    Up to 4 frequencies, from 500 kHz to 5 MHz
  • Transducers
    Typically Ø10-25mm ceramic discs (beam width according to frequency), with other optional configurations.
  • Transducer arrangement
    Individual cabled transducers
  • Gain
    Software controlled transmitter and receiver gain adjustment
  • Range
    150 cm (typical), up to 10 m at frequencies below 2MHz 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
    12V power supply
  • Disk storage
    Compact Flash (proprietary format). 2 GB standard.
  • Additional sensors
    Cabled turbidity, temperature, pressure
  • Data comms
    RS232 up to 115 kbaud; USB 1.1 typically 2-3 Mbaud
  • Housing options
    Plastic IP68 weatherproof instrument case

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