Starflow Ultrasonic Doppler Instrument

6526H Starflow

  • Overview

    The Starflow Ultrasonic Doppler Instrument is a compact, easy-to-use system for measuring the velocity and depth of water in drainage channels, large pipes, and in rivers and streams.
    It is suitable for use in a wide range of water qualities, from sewerage and waste water to clean streams, potable water, and even sea water. The instrument measures forward and reverse flow conditions and may be programmed to compute Flow Rate and Total Flow in pipes and open channels.

    The Model 6526H Starflow combines an ultrasonic transducer assembly (profiled to reduce flow disturbance) with signal processing electronics. It is designed to be placed at (or near) the bottom of a water channel for “upward looking” measurement. A single cable connects the instrument to a 12VDC power source.

    Water velocity is measured by the Starflow ultrasonic Doppler principle which relies on suspended particles or small air bubbles in the water to reflect the ultrasonic detector signal. The instrument will not operate in very clean, “de-gassed” water. Water depth is gauged by a hydrostatic pressure sensor, referenced to atmospheric pressure through the vented power and signal cable.

    Water temperature is also measured so the instrument can adjust for the change in velocity due to speed of sound. Water temperature can also be logged.
    Two version are available, depending on the requirements:

    ModelDepthResolution
    6526H-210 to 2m1mm for 0-1m
    2mm for 1 to 2m
    6526H-510 to 5m2.5mm for 0 to 2.5m
    5mm for 2.5 to 5m

  • Specifications

    Velocity
    Range: 21mm/s to 4500mm/s bi-directional
    Accuracy: 2% of measured velocity
    Resolution: 1mm/s
    Depth: 0 to 5m in two ranges

    Resolution
    Range: 0m to 2.0m; 0m to 5.0m
    Accuracy: Typical ±0.25%

    Temperature
    Temperature: -17°C to 60°C
    Resolution: 0.1°C.

    Flow
    Computation: Flow rate, totalised flow
    Channel Type: Pipe, open channel, natural stream

    Integrated MicroLogger
    Storage Memory: 512kB, CMOS RAM
    Log Interval: Programmable, 5s to 1 week
    Communication: RS-232, 300-38400bps
    SDI-12: 1200bps instrument channel.
    Control: CMOS output trigger (water sampler)

    General
    Cable: 15 metres, 9 way vented
    Cable Options: User specified up to 100 metres
    Power Source: External battery 12V DC
    Power Usage:
    11.5VDC to 15VDC
    65uA standby
    200mA active
    90mA communications
    Operating Temp: 0°C to 60°C water temperature.
    Material: PVC body, stainless steel mounting plate
    Dimensions: 290mm x 70mm x 25mm
    Weight: 2kg with 15m cable

  • Ordering Information

    Full product consists of following models: 6526H, 6526M-2, 6603D-SDI, 6603DT and 6308B-AUE

    ModelDescription
    6526H-212m depth Starflow System
    6526H-21-SSpecial cable length (up to 50m) 2m depth Starflow System
    6526H-515m depth Starflow System
    6526H-51-SSpecial cable length (up to 50m) 5m depth Starflow System

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  • Documents

    Brochures
    Brochure – 6526H Starflow

    Manual
    Manual – 6526H Starflow

    Application Notes
    CSIRO Remote Automated Water Quality Stream Gauging System Design
    Irrigation Channel Measurement and Control
    Flood Monitoring / Flood Alerts
    Rivers and Streams Monitoring
    Surface Water Monitoring
    Industrial Outflow Monitoring

Unidata Ultrasonic Doppler Instrument Starflow