Data Logging Rain Gauge


Fully Integrated HOBO Pendant Event data logger.

The Data Logging Rain Gauge is a fully self-contained, battery-powered rainfall data collection and recording system. It  includes a HOBO Event data logger integrated into a tipping-
bucket rain gauge. The RG3 automatically records up to 160" (320 cm for the RG3-M) of rainfall data that can be used to determine rainfall rates, times and duration. A time and date stamp is stored for each 0.01" (0.2 mm for the RG3-M) tip event for detailed analysis.

Included with the Rain Gauge 

>> HOBO Pendant Event Data Logger 
>> (2) Hose Clamps and (3) Screws

Data Logging Rain Gauge Features

  • Complete with Fully Integrated HOBO Pendant Event Data Logger
  • Constructed from field-proven corrosion-resistant components: aluminum housing and collector ring; stainless steel shaft and brass bearings; tipping bucket s high-precision, injection-molded, high impact ABS plastic.
  • Nonvolatile EEPROM memory retains data even if battery fails
  • Removable top for easy data offload
  • Battery check at launch
  • Side bracket for mast mounting (hose clamps included)
  • Self-emptying for continuous rainfall logging
  • Weatherproof
  • Readout and relaunch in the field with optional Optic Base Station or Waterproof Data Shuttle
  • Requires HOBOWare Software and Optical Base Station or Shuttle Data Logging

Data Logging Rain Gauge Specifications

Maximum Rainfall Rate 127 cm (5 in.) per Hour
16,000-Tip Memory Capacity RG3: records up to 160" of rainfall data
RG3-M: records up to 320cm
Resolution RG3: 0.01" 
RG3-M: 0.2mm
Calibration Accuracy RG3: ±1.0% (up to 1"/hr)
RG3-M: ±1.0% (up to 20 mm/hr)
Time Stamp Resolution 1 second
Operating Range Temperature: 0° to 50°C (32°F to 122°F)
Storage Range Temperature: -20°C to 70°C (-4°F to 122°F)
Environmental Rating Weatherproof
Tipping Gauge Housing 15.24cm (6") Aluminum Bucket
Tipping Gauge Mechanism Stainless Steel Shaft with Brass Bearings
Time Accuracy 1 minute per month at 25°C (77°F)
Data Storage Capacity Number of data points depends on rainfall rate: 16K to 23K tips when recording rainfall only; 25K to 30K data points when recording rainfall and temperature.
Standards Compliance CE
Weight 1.2 Kg (2.5 lbs)
Dimensions 257.2mm Height x 152.4mm Diameter (10.125" x 6.0")
15.39 (6.06") Receiving Orifice
Temperature Measurement

Range: -20° to 70°C (-4° to 158°F)
Accuracy: ±0.47°C at 25°C (±0.85°F at 77°F)
Resolution: 0.10°C at 25°C (0.18°F at 77°F)
Drift: Less Than 0.1°C (0.2°F) per Year
Response time in Airflow (1 m/s (2.2 mph): 10 minutes typical to 90%
NOTE: A Solar Radiation Shield is Required for Accurate Temperature Measurements in Sunlight.


Description Part Number
Data Logging Rain Gauge RG3
Data Logging Rain Gauge (Metric Version) RG3-M
Required Software Kits - 1 Required (Compare HOBOWare Versions)
HOBOware Lite Software Kit for Windows/Mac (includes Software and Cable) BHW-LITE-CD
HOBOware Pro Software Kit for Windows/Mac (includes Software and Cable) BHW-PRO-CD
Communication Kits 1 - Required
Optic USB Base Station (includes Coupler) BASE-U-4
Pendant Optic Base Station with Coupler BASE-U-1
Waterproof Shuttle Data Transporter/Optic Base Station w/ Couplers - Requires HOBOWare Pro Software U-DTW-1
Optional Accessories
Extra/Replacement Batteries (pack of 5) - CR2032 Lithium Batteries HRB-TEMP-5
Coupler for UA Pendant Loggers COUPLER2-A
Coupler for UA Pendant Loggers (**Open Box** Limited Quantity: 1 Available) COUPLER2-A--U--

Optic USB Base Station

  • Offload and Relaunch Loggers in the Field
  • Optical Infrared Interface
  • Easy USB connection to PC
  • Includes All Couplers and USB Cable

Pendant Optic Base Station and Coupler

  • Offloads and Relaunches Pendant Data Loggers in the Field
  • Optical Infrared Interface
  • Easy USB connection to PC
  • Includes Coupler and USB Cable

Waterproof Shuttle Data Transporter

  • Can be used as an Optic USB based station for HOBO Pendant loggers, HOBO Water Level Loggers, and HOBO Water Temp Pro V2 Loggers
  • Allows for data readout under water while diving or snorkeling
  • Rugged waterproof construction
  • LEDs show offload and relaunch status