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OTT WAD 200

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OTT WAD 200

    • Small size – installation on 2″ tube.
    • Available with 200 or 314 cm² collection opening.
    • Intensity and total data output according to WMO guideline no. 8 with measuring range from 0.001 to 720 mm/h.
    • Compensation of temperature and wind errors by internal filter algorithm.
    • Various data interfaces (SDI-12, RS-485, pulse output) for easy system integration.
    • Configurable via USB port.
    • Solid design for high MTBF.
    • Self-emptying measuring system allows unattended long-term use.
    • Low power consumption enables operation with solar power supply.

    For precipitation measurement networks:

    • In urban areas
    • Of Scientific Research Programmes
    • Of Flood warning systems
    • For the calibration of weather radar data
    • As replacement for manual control precipitation measurement methods

    General Data  
    Recordable percipitation Liquid
    Collecting area 200 cm²
    Capacity 0.2 mm bucket, self-emptying
    Sensor type Weighing precipitation gauge
    Sensor element Hermetic sealed load cell
    Measurging range  
    Percipitation 0.001 to 720 mm/h (28 inches/h)
    Resolution 0.001 mm / 0.001 mm/h (0.00004 inches)
    Accuracy ± 0.1 mm or ± 3% ± 0.1 mm / min ±6mm/h or ±3 %
    Electrical parameters  
    Electronics 9.8 to 32 VDC / 160 mW (SDI-12 & pulse output)
    Interfaces  
    USB Configuration / Service-Mode
    Serial interface SDI-12 / RS-485 2-wire
    Baud rate 1200 (SDI-12) / 2400 to 19200 baud (RS485)
    Pulse output 0.01 / 0.1 / 0.2 / 0.5 / 1.0 mm
    Status output Rain yes/no
    Analogue output 0/4 … 20 mA or 0 … 2/5 V
    Data output  
    Real time (RT) Intensity & cumulative precipitation
    Status Operational mode, hardware
    Output interval 1 min (intensity) / 1 to 60 minutes
    Output formats SDI-12 V1.3 : metric & imperial units / RS-485 (galvanic isolated): ASCII.TXT and MODBUS
    Mechanical parameters  
    Dimension (Ø x h) 292 mm x 190 mm
    Weight 2.5 kg
    Material  
    ring, funnel, plate Aluminum alloy
    Load cell Stainless steel
    Bucket Monolithic
    Mounting/Installation Ø 2″/ 60mm
    Environmental conditions  
    Operating temperature 0 … +70 °C
    Storing temperature -50 … +70 °C
    Ambient relative humidity 0 … 100 % RH
    Protection class Load cell: IP 67 / instrument: IP 64
    Wind Speed Survival 60 m/s
    EMC/EMI and Norms  
    EMC/EMI EN 61000-4-3, CE conform
    RoHS 2011/65/EU
    Norms WMO-No 8, VDI 3786 Bl. 7

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