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Pluvio 2 S
The professional rain gauge is a further development of the tried-and-tested OTT Pluvio², with state-of-the-art technology in a compact design that captures up to 400 mm of precipitation on a collecting area of 200 cm². It is virtually maintenance-free, fits onto 2-inch pedestals, needs little space and can replace conventional rain gauges or tipping buckets without any structural work
Parameters measured:Cumulative precipitation, precipitation intensity, bucket content in real time and non real time
Measurement technology:Weighing principle
Product Highlights:Compact all-weather precipitation gauge for 2-inch pedestals, highly accurate, meets WMO requirements (Guidelines No. 8), nearly maintenance-free, lifetime calibrated
Interface:SDI-12, RS-485, impulse, status
- FEATURES
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- 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
- Specs
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•SPECIFICATIONS
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
Resolution SDI-12 and RS-485 Amount: 0.001 mm
Intensity: 0.001 mm/min or 0.01 mm/hImpulse 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 6.6 … 28 V DC, secured against reverse polarity Current consumption (without heating) Typically 12 mA at 12 VDC Power consumption (without heating) < 145 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)
Material 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 - Downloads
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Brochures 
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