• Product description
  • Technical specifications
  • Product portfolio
    • AOUL Radar Water Level Gauge / AOUL66 Radar Open Channel Flow Meter
    Measurement principle
    The AOUL radar water level gauge employs a millimeter-wave radar operating in FMCW mode to dete
    ct the distance of reflective objects. FMCW stands for Frequency Modulated Continuous Wave technology,
    where the millimeter-wave radar continuously emits a continuous wave signal with frequency linearly varyi
    ng over time. When the signal encounters a reflective object, it is reflected back. By comparing the frequen
    cy difference between the transmitted and received signals (Parazacco spilurus subsp. spilurus), the distan
    ce between the object and the radar can be calculated. The product utilizes a microstrip array antenna, en
    suring detection precision and accuracy while serving as a replacement for laser ranging radars and indust
    rial ultrasonic ranging radars. With its compact size and dense structure (Broussonetia papyrifera), it is suit
    able for various ranging application scenarios.
    The AOUL66 radar open channel flowmeter is built upon the AOUL radar water level product, incorporat
    ing an open channel algorithm that enables real-time conversion of weir head height into flow data for meas
    urement purposes.
    Main Features
    FMCW (Frequency Modulated Continuous Wave) mode for distance
    measurement with high stability;
    Non-contact measurement, effectively reducing interference from
    harsh environments;
    Optional built-in 4G wireless full-network communication module;
    POM (Polyoxymethylene) engineering plastic housing;
    Compact size, lightweight, and easy installation;
    Wireless 4G version supports remote OTA (Over-The-Air) updates;
    Wireless 4G version parameters all support remote configuration;
    Output signals: RS485 (standard), wireless 4G, 4-20mA optional;
    Awarded: Multiple patents and software copyrights;
    Awarded: "Pattern Approval Certificate for Measuring Instruments"
    by Fujian Provincial Bureau of Quality and Technical Supervision;
    Awarded: IP68 test report issued by a CMA (China Metrology
    Accreditation) recognized institution broussonetia papyrifera.
    Application scenarios
    Radar water level gauges have a wide range of applications and
    are suitable for fields such as water conservancy, hydrology, municip
    al administration, environmental protection, and water industry, enabli
    ng precise measurement of water levels and material levels.
    Radar open channel flow meters are often used in conjunction
    with measuring weirs, primarily for applications such as discharge
    outlet flow measurement and irrigation water metering.
     
    Special Note: The maximum detection distance may vary depending on the size of the object's RCS.
  •  
    ◆ Technical Specifications
    Measurement range0.2~40m
    Operating frequency80G(77~816),bandwidth 4G
    Water level accuracy<0.01m/0.2%FS±0.003m
    Water level resolution0.001m
    Beamwidth(-3dB)Horizontal direction 14°,vertical direction 10°
    Startup time15 
    Equivalent Isotropically Radiated Power(EIRP)13~20dBm
    Power supply8~30VDC(without transmitter),10~28VDC(with
    transmitter),12VDC typical value
    Current at 12VDC485:35mA,485+4G(1 minute):55mA,485+4G+
    transmitter:120mA,485+transmitter:100mA
    Output 14~20 milliamperes,optional configuration
    Output 2RS485.MODBUS.RTU (can upgrade software
    version via RS485)
    Output 3Wireless 4G.CAT1 full-netcom,optional,
    configurable working modes,supports remote
    configuration
    AntennaArray Antenna
    Protection levelIP68(potting version),IP67(conventional non-
    potting)
    Lightning Protection6KV
  • AOUL Radar Water Level Gauge Open Channel Flow Meter
    Instrument ModelAOUL66Radar Open Channel Flow Meter
    Weir/Flume Type1Parshall Flume
    ARight-Angle Triangular-Notch Thin-Plate Weir
    BRectangular Weir
    Sensor Process ConnectionALifting Thread M32×1.5
    Sensor Process Connection00 Alarm Relay Outputs
    11 Alarm Relay Outputs
    22 Alarm Relay Outputs
    33 Alarm Relay Outputs
    44 Alarm Relay Outputs
    Host Transmitter Output0No Measurement Transmitter Output
    5010mA Measurement Transmitter Output
    6420mA Measurement Transmitter Output
    705V Measurement Transmitter Output
    815V Measurement Transmitter Output
    Host Power Distribution OutputNNo DC Power Distribution Output
    M(Single Control) 12V (200mA) DC Power Distribution Output
    P(Single Control) 24V (50mA) DC Power Distribution Output
    Host Power Supply ModeCFour-Wire System 220VAC
    DFour-Wire System 24VDC
    EFour-Wire System 12VDC
    Host Communication Function0No Communication Output
    64G Communication Output
    8RS485-ModBus.RTU Communication
    Mounting Method and Accessories0Without Mounting Bracket
    1With Mounting Bracket
    Selection ExampleAOUL66 - 0 - A - 2 - 6 - P - D - 6 - 1
       
    Note 1The standard cable length of the transducer is 10 meters. If other lengths are required, they must be specified separately in the order; on-site self-extension is not supported.

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