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OTT Pluvio² S


OTT Pluvio² S

    • Compact and relatively light precipitation gauge, with a weather resistant collecting bucket for 400 mm of precipitation (200 cm² collecting area)
    • Minimum space requirement – no problem to install on existing 50 cm x 50 cm concrete bases • any suitable vibration-free 2-inch pedestals can be used again
    • The intensity and cumulative data output fulfils the WMO directive No. 308
    • Highly-developed data capture and processing with signal analysis, filtration and noise reduction as well as algorithms that compensate for the influences of temperature and wind
    • Considerable measuring accuracy of ±1 mm, wide measuring range, and a high data accessibility of 99%
    • Output of high precipitation intensities of up to 3,000 mm/h without any time delay
    • Precise capture of the finest precipitation from as little as 0.03 mm of precipitation in an hour
    • Optionally available with adjustable ring heater – prevents the formation of ice or snow caps and keeps the orifice rim free • also deployable in solar operation in reduced voltage mode
    • Various output interfaces (SDI-12, RS-485, pulse/contact), configurable through USB by means of tablet PC or notebook
    • Low overall operation costs – lifelong calibrated ice-free, drift-free and virtually maintenance-free measuring device

    The OTT Pluvio² S is designed for professional use, and is suited for automated and semi-automated measuring networks, especially in locations where only limited space is available.


    • Automated meteorological measuring networks
    • Weather observer measuring networks
    • Urban hydro-meteorological measuring networks
    • Precipitation stations for flood warnings and precipitation-runoff modelling
    • Precipitation stations as part of research projects
    • Weather radar systems for calibration and Z/R correlation

    Recordable precipitation Liquid, solid, and mixed
    Recordable precipitation amount 400 mm (approx. 8 l)
    Collecting area 200 cm²
    Measurement method Weighing measurement method
    Sensor element Hermetically sealed load cell
    Measuring ranges
    Precipitation 0 … 50 mm/min or 0 … 3000 mm/h
    Cumulative precipitation threshold at 60 min. collection time 0.03 mm
    Precipitation intensity threshold 0.1 mm/h or 6 mm/h
    Accuracy (at -25°C … +45°C)
    Amount ± 0.1 mm or ±1% of measured value
    Intensity ± 0.1 mm/min or ± 6 mm/h or ±1% of measured value
    SDI-12 and RS-485 Amount: 0.001 mm
    Intensity: 0.001 mm/min or 0.01 mm/h
    Impulse output 0.05/0.1/0.2 mm, adjustable
    Query interval
    Amount 6 sec … 60 min
    Intensity 1 min
    Output delay
    Real-time < 1 min
    Non-real-time (filterd values) 5 min
    Measurement output
    Measured data Intensity RT, amount RT/NRT, amount NRT, amount total NRT, bucket content RT and NRT, temperature of load cell
    Status output Pluvio² S status, heating status (if present)
    Electrical data
    Serial interfaces SDI-12 V1.3, RS-485 (2- or 4-wire), SDI-12 protocol and command line mode (ASCII)
    Digital outputs (2/5 Hz) Impulse 0.05/0.1/0.2 mm (adjustable); status 0 … 120 impulses/min
    USB (2.0) For service mode
    Power supply 5.5 … 28 V DC, secured against reverse polarity
    Current consumption (without heating) Typically 9.2 mA at 12 VDC
    Power consumption (without heating) < 110 mW
    Ring heating, optional
    Power supply 12 … 28 VDC, typ. 12/24 VDC, secured against reverse polarity
    Heating capacity 24 VDC / max. 50 W, temperature control range 45 K (wind speed 0 m/s);
    12 VDC / max. 12.5 W, temperature control range 12 K (wind speed 0 m/s)
    Modes of operation of heater control system Disabled, continuously enabled, continuously enabled within a specified temperature range, US NWS standard (time-controlled), enabled in case of precipitation (adjustable after-run time)
    Operating range of orifice rim heater -40 °C … + 60 °C (ambient temperature)
    Mechanical data
    Dimensions and weight
    Pluvio² S 288 mm x 651 mm (Ø x h)
    Pedestal Ø 2″ / 50 … 60 mm
    Weight Approx. 7.8 kg (empty bucket)
    Base plate Stainless steel/aluminium
    Collecting bucket/bucket support/pipe housing ASA, UV resistant
    Environmental conditions
    Temperature, in operation -40 … +60 °C
    Temperature, storage -40 … +70 °C
    Relative humidity 0 … 100 % rF (non-condensing)
    Protection and Standards
    Pipe housing closed IP65
    Pipe housing open IP63
    Load cell IP67
    EMC 2004/108/EG; EN 61326-1:2013
    Salt resistance EN 60068-2-11
    Q1: What is the temperature rating of the NEMA version of SL3?

    A: -40ºC  –  +60°C

    Q2: How much does the device weigh?

    A: The unit without the enclosure weighs 1 Kg.

    Q3: Can I get the SatLink 3 in any different colors?

    A: No

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