Features and specifications

• 8000-tip memory capacity: RG2 records up to 80" of rainfall data and RG2-M records up to 160 cm
• Readout and relaunch in the field with optional HOBO Shuttle
• Programmable start time/date
• Memory modes: stop when full or wrap-around when full
• Nonvolatile EEPROM memory retains data even if battery fails
• Blinking LED light inside logger case confirms operation
• User-replaceable battery lasts 1 year
• Battery check at launch
• Resolution: 0.01" for the RG2 and 0.2 mm for the RG2-M
• Calibration accuracy: 1.0% (up to 1" per hour for RG2 and 20 mm per hour for RG2-M; field accuracy depends on environmental conditions)
• Timestamp resolution: 0.5 seconds
• Operating temperature: +32°F to +122°F (0°C to +50°C)
• Storage temperature: -4°F to +158°F
  (-20°C to +70°C)
• Relative humidity range: (when logger case is closed) 0 to 100% RH, weatherproof
• Time accuracy: ±1 minute per week at +68°F (+20°C)

Rain gauge construction

The RG2 and RG2-M Data Logging Rain Gauges are constructed from field proven, corrosion-resistant mechanical components.

• Housing: Aluminum with a baked white enamel finish
• Collector ring, screen, mounting bracket and feet: black anodized aluminum
• Shafts, bearings and hardware: stainless steel and brass
• Tipping bucket: high precision, injection molded, high-impact polystyrene plastic

HOBO Event inside!

For projects that must evaluate changes in temperature, relative humidity and rainfall over a large region, but within a limited budget, Onset data loggers and accessories can be easily configured into a cost-effective, micro-climate weather logger system.

There are a wide range of applications for this type of system in agriculture, civil engineering and environmental monitoring.

The complete system consists of Onset's Data Logging Rain Gauge, HOBO Pro Temp/RH data logger, Solar Radiation Shield, HOBO Shuttle and BoxCar software. A stable mounting location, post, or tripod is required for easy field installation (mounting hardware included with products). Once installed, the loggers are managed as a system using the HOBO Shuttle for field data acquisition and transport, and BoxCar software for logger and shuttle set-up, and post-acquisition data readout and analysis.

When installed and managed together, these products become a rugged, inexpensive micro-climate sensor/logger system solution. For more information, please see the components, part numbers and individual product pricing below.

Use BoxCar Pro 4.0 (optional) to look at rainfall per time interval or export data to spreadsheets.