OTT HydroMet

- Model Qliner2 - Acoustic Doppler Current Profiler (ADCP) for Surface Water Discharge Measurement

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OTT Qliner 2 – Doppler technology for mobile discharge measurement in rivers and channels.  The measurement is carried out using the classic verticals process. At the required vertical positions, the Qliner 2 measures both the vertical velocity distribution and the water depth. All measured data are transferred to the PDA via Bluetooth. After the measurement is complete, the discharge is available immediately. The Qliner 2 can be operated easily on cable ways, from bridges or from the edge.

  • Usage Type: Spot
  • Measurement technology: Acoustic
  • Parameters measured: Flow velocity and depth
  • Product highlights: Acoustic water profiling instrument for section by section discharge measurements in rivers and open channels up to 20 m water depth. Operated by PDA user software with Bluetooth data transmission. Low flow resistance and high boat stability.
  • Measurement range: ± 10 m/s
  • Accuracy: ± 1% of measured value ± 0.5 cm/s

  • Reliable and precise ultrasound Doppler profiler
  • Intelligent evaluation algorithms
  • Discharge calculation according to internationally recognized standards(EN ISO 748)
  • GPS or bottom tracking data are not required
  • No measurement problems with a moving bottom
  • Ideal for small and medium-sized rivers
  • For measurements in case of flooding
  • No moving parts that could be blocked or jammed during measurement
  • Familiar measurement process, therefore easy to learn

  • Discharge measurements for small and medium-sized river
  • Can be operated easily on cable ways, from bridges or from the edge.

  • Water velocity measurement:
    • Measuring range: ± 10 m/s
    • Resolution: 1 mm/s
    • Accuracy: ± 1% of measured value ± 0.5 cm/s
  • Temperature measurement:
    • Measuring range: -4 ... 40 °C
    • Resolution: 0.01 °C
    • Accuracy: ± 0.1 °C
  • Doppler sensor:
    • Accoustic frequency: 2 MHz / 1 MHz
    • Cell size: 0.1 ... 2 m / 0.3 ... 4 m
    • Water depth range: 0.35 ... 10 m / 1.20 ... 20 m
    • Maximum number of cells: 40
  • Batteries boat/PDA:
    • Nominal charge: 4 Ah / 5.2 Ah
    • Voltage: 12 V DC / 3.8 V DC
    • Operating time: typically 24 h
  • Radio connection:
    • Frequency: 2.4 GHz
    • Type: Bluetooth, Class 1
    • Range: up to 150 m (depending on environm. conditions)
  • Boat:
    • Material: glass fiber
    • Size (L x W x H): 957 mm x 482 mm x 255 mm
    • Weight: 11.1 kg
  • PDA:
    • Type: Nomad (TimbaTec)
    • Size (L x W x T): 175 mm* x 100 mm x 50 mm
    • *with antenna: 275 mm
    • Weight: 620 g
  • Transport case:
    • Size (L x W x H): 1,030 mm x 580 mm x 370 mm
    • Weight: 19.5 kg - empty, 32 kg - complete
  • Protection class:
    • Boat above waterline: IP67
    • PDA: IP65
  • System environmental conditions:
    • Operating temperature: -10 ... +60 °C
    • Storage temperature: -20 ... +70 °C
    • Shock and vibration: DIN ISO 2206 / DIN ISO 2248
  • 'Qliner für Pocket PC' software:
    • Operating system: Windows Mobile
    • Functions: deployment planning, online data collection, data retrieval, ASCII conversion, graphical display
  • 'Qreview' software for PC:
    • Operating system: Microsoft Windows
    • Functions: data processing, storage, export

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