OTT Pluvio² - Weighing Rain Gauge
All-weather, high accuracy rain gauge for continuous data collection
The OTT Pluvio² is an all-weather precipitation gauge that uses superior weight-based technology to measure the amount and intensity of rain, snow, and hail. Developed in conjunction with industry-leading meteorological services, the OTT Pluvio² employs a high-precision load cell and algorithms that compensate for wind, temperature, and evaporation, ensuring the highest accuracy precipitation measurements over time.
- Cumulative precipitation, precipitation intensity, bucket content in real time and non real time
- Weighing principle
- All-weather precipitation gauge without moving parts according to WMO guide line No. 8
- SDI-12 / RS-485, pulse
- Accurate measurement: precipitation accuracy within 0.004 inches with accumulation and intensity readings and filter algorithms to compensate for wind, temperature, and evaporation
- Virtually maintenance-free operation: lifetime factory calibration, drift-free measurements, and robust protective housing eliminate field visits for instrument service
- Multiple communication interfaces: SDI-12, RS-485, and Pulse Output options
- Solar panel power options make the instrument ideal for remote locations
- Easy software setup and a USB interface for communication with computer
- Wind protection shield available for particularly exposed locations
- Heated ring option available to prevent the accumulation of snow on the sensor
- Easy installation onto 4" pipes
- Precipitation Measurement: Continuous, real-time measurement of rain, snow, hail, and sleet in all monitoring environments, even remote environments without power supply
- Monitoring Road Conditions: precipitation amount and composition are combined with general visibility measurements to provide an accurate picture of road conditions
- Early Flood Warning: when combined with water level sensors, the Pluvio2 is the central component in an early flood warning system
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netDL Templates - Configuration - for OTT Data Logger Operating Program
Templates for netDL Configuration shown in the OTT netDL configuration videos
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OTT Pluvio² / OTT Pluvio² S / OTT Pluvio² L - Operating program
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TechTip: OTT netDL and Pluvio²
How to use the OTT netDL data logger together with the Pluvio² precipitation sensor
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Download PDF
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| Types of precipitation | liquid, solid, and mixed |
| Collecting area | 200 cm² and 400 cm² |
| Collection volume | 1500 mm/m² and 750 mm/m² |
| Measuring range 200 cm² | |
| Intensity RT / measuring interval 1 minute | 12.00 ... 1800.00 mm/h, 0.20 ... 30 mm/min |
| Amount RT/NRT, amount NRT, amount total NRT | 0.10 ... 500.00 mm |
| Bucket content, RT and NRT | 20.00 ... 1600.00 mm |
| Measuring range 400 cm² | |
| Intensity RT / measuring interval 1 minute | 6.00 ...1800.00 mm/h, 0.10 ... 30 mm/min |
| Amount RT/NRT, amount NRT, amount total NRT | 0.10 ... 500.00 mm |
| Bucket content, RT and NRT | 20.00 ... 850.00 mm |
| Accuracy (at - 25 ...+45 °C) | |
| Amount, absolute (60 minutes collection time) | ± 0.05 mm |
| Intensity | ± 0.1 mm/min or ± 6 mm/h |
| Resolution | |
| Impulse output | 0.1 mm |
| SDI-12 and RS-485 | 0.01 mm/min, 0.01 mm/min or mm/h |
| Times | |
| Intensity output interval | 1 minute |
| Output delay | RT 20 seconds; NRT 5 minutes |
| Query interval | 6 seconds .... 60 minutes |
| Interfaces | |
| USB | configuration/service mode and firmware update |
| Serial interfaces | SDI-12 or RS 485 |
| Digital outputs | impulse 0.1 mm (configurable) and status (0 ... 120 impulses/min; configurable 5 or 2Hz ) |
| Measurement output | intensity RT; amount RT/NRT, amount NRT, amount total NRT, bucket content RT and NRT; temperature of load cell, status Pluvio², status heating (if present) |
| Electrical and mechanical data | |
| Sensor element | sealed load cell |
| Power supply | 10 ... 28 VDC |
| Power/current consumption | typ. 12 mA at 12 V |
| Ring heating, optional | Pluvio² 200: 24 VDC / 50 Watt Pluvio² 400: 24 VDC / 100 Watt |
| Dimensions (Ø x h) | |
| OTT Pluvio² 200 / 400 | 450 mm x 740 mm / 450 mm x 660 mm |
| Pedestal | (Ø) 110-120 mm ( 4 ') |
| Weight | (bucket empty) 15 kg |
| Material for base plate / bucket / pipe housing | stainless steel, aluminium / polyethylene / ASA, UV- resistant |
| Environmental conditions | |
| Temperature, in operation | -40 ... +60 °C |
| Temperature, storage | -50 ... +70 °C |
| Relative humidity | 0 ... 100% (non-condensed) |
| Protection | |
| Housing | IP54, resistant to salt fog |
| Load cell / electronics | IP67 / IP64 |
| EMC | EN 61000-4-2/4/5/6, Level 5 (4 kV) EM/EMI EN 61000-4-3, CE conformity |
| RT = real- time; NRT = non real-time ; units can be configured in mm or in (inch) and °C or °F |