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Dual Orifice Constant Flow Bubble Gage & Recorder

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Dual Orifice Constant Flow Bubble Gage & Recorder

    • User-set measurement and logging. Version -2 make separate measurements in 2 locations. The Bubbler managers pressure on each orifice line independently so that pressures in one line do not affect operation of the other line.
    • Make measurements in separate channels or separate bodies of water or within the same area as redundant sensors (-2 version)
    • Intall the Bubbler orifice with a vertical separation to get an extended range measurement of up to 50 psi total on a 25 psi unit.
    • The -3 version adds a special ultra-accuate density sensor. The -3 density measurement is more accurate (0.1%) than measurements by separate stage sensors on-site would be.
    • Bubbler is both a logger and a sensor, capable of working as a stand-alone or with other loggers/communcations devices via SDI-12, RS232 and RS485.
    • Flash Log holds over 300,00 readings and allows recording of status, water level data.
    • SDI-12 and RS232/RS485 interfaces provide data to loggers or communications equipment.
    • Dual Orifice CF Bubbler supports MODBUS protocol.
    • RS232 port supports a simple command line mode compatible with HyperTerminal and other communcations devices.
    • RS232 port also provides full access to setup, status and Bubbler data plus easy connection to a modem or radio.
    • Front panel for setting up operating parameters, monitoring performance,testing and examining the log.
    • Self-contained needing only external power and orifice tubing.
    • Long-life desiccant (1 year depending on local humidity and user set flow rate)
    • User-set bubble rate for each line to accommodate a variety of field conditions.
    • User-set configuration of single, dual orifice lices and extended range operation (-2 only)
    • Built-in, precision Accubar® sensor, accuracy 0-20ft. 0.01 ft, 20-57.5ft. 0.05% reading. 50 psi version’s accuracy 20-115.3ft. 0.05% reading.
    • User-configured averaging to filter out waves.
    • User-set auto purge to keep the outlet clear of debris. Sensors auto zero after purge to prevent sensor drift.
    • Redundant data storage when connected to an external logger.
    • Meteorology and Climatology
    • Disaster Warning
    • Water Level and Flow
    • Water Quality
    • Hydrology

    • Measurements
    Two Stage/Level/Pressure measurements, Internal Temp, Battery. -3 version makes one stage/level/pressure measurement and one density measurement. Optional water temperature port.
    • Automeasure Interval
    1 sec to 24 hours
    • Stage/Level/Pressure Accuracy
    Pressure/stage/Level: 0.05% reading with minimum of 0.01 ft.
    • Measurement Technique
    Constant flow bubbler with bubble rate programmable by user. -2 models have dual, independent accubar sensors for measuring 2 levels. -3 models have 1 accubar for level and 1 accubar for measuring the differential pressure (density)
    • Stage/Level/Pressure Range
    25 psi, 57 ft, 17 meters; 50 psi, 115 ft,35 meters
    • Density Accuracy
    0.1% (excluding orifice spacing error) (-3 model only)
    • Suspended Sediment
    0 to 1,000,000 mg/L, accuracy +/- 500 mg/L with 2 ft separation of orifices.
    • Water Temperature Range (optional)
    -5 C to + 45C
    • Water Temperature Accuracy (optional)
    0.1°C
    • Measurement Technique
    Platinum RTD (385 or 392), or Precision thermistor.
    • Maximum Purge Pressure
    50 psi or 70 psi based on model
    • Desiccant
    Silica Gel, lasts up to a year
    • Outlet
    4/6mm tube or 3/8″ tube based on model
    • Enclosure
    Fiberglass NEMA-4, IP64, lockable
    • Communication Ports
    SDI-12, RS232, RS485
    • Operating Temperature
    -25°C to +60°C standard, -40°C to +60°C optional
    • Display Type
    2×20 LCD with backlight
    • Keypad Type
    6 button
    • Memory
    •    Built-In Flash
    >300,000 readings
    •    SD/MMC Card
    yes
    •    USB
    no
    • Ethernet
    no
    • Clock Accuracy
    (at 0°C – 40°C)
    • Power Requirements
    8 to 16 VDC
    • Max Current
    4 amp for 25 psi unit, 8 amp for 50 psi
    • Average Current
    • Communication Protocols Supported
    MODBUS (via RS232 only), SDI-12, command line
    • Programming
    via front panel, commandline or SDI-12
    • Device Dimensions
    •      Height
    15″ (38.1 cm)
    •      Length
    15″ (38.1 cm)
    •      Width
    7.5″ (19.1 cm)
    •      Weight
    20 lbs. (9.1 kg)

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