Tipping Bucket Rain Gauge

The Environdata RG12RM Series tipping bucket rain gauge is Built to BoM standards and is sturdily constructed from stainless steel with a powder painted cast aluminium base and copper receiver funnel.  The tipping mechanism is gold plated brass and the design is rugged and reliable.

TBRG Features

  • 203mm diameter collection funnel
  • Stainless steel barrel
  • Copper inlet funnel
  • Gold plated brass machined bucket
  • Meets Australian & WMO standards
  • Robust, reliable, long service life
  • Easy to clean
  • Syphon-action delivery mechanism
  • 3-wire Hall Effect long life triggering
  • Dual Reed Switch available on request
  • Records rainfall in up to 700mm/hr rainfall intensity
  • Australian Made

TBRG Applications

  • Rainfall Distribution & Rainfall Intensity monitoring
  • Workflow Planning
  • Safety and Automation
  • Construction Project Monitoring
  • Catchment monitoring
  • Soil conservation
  • Flood mitigation programs
  • Hydrology
  • NSW RMS R272 Road Weather Station compliant
  • PLC, RTU & SCADA Connectivity

Rain Gauge Summary

The RG12RM series tipping bucket rain gauge (TBRG) is designed to work in harsh Australian conditions from the Simpson Desert to the Tropics of Far North QLD, to the exposed west coast of Tasmania. Constructed from highly corrosion resistant materials such as marine grade stainless steel, gold plated brass, marine grade cast aluminium and specially coated electronics, the RG12RM TBRG is designed and built in Australia to ensure reliability and longevity, no matter your environment.

Method of TBRG Operation
Rain falling on the 203mm copper collecting funnel is directed through a siphon control unit which discharges as a steady stream into a two section bucket mounted in unstable equilibrium.
Once each side fills with a precise volume of water, the bucket tips.  The tip empties the water from that side of the bucket while simultaneously placing the empty bucket directly under the siphon, where it now starts to fill and the process is repeated, the bucket tipping alternately about its axis: hence the name “tipping bucket rain gauge”.

Each tip causes the magnet to trigger the Hall – Effect circuit in Environdata’s sensing electronics. This produces a 250ms square wave pulse corresponding to 0.2mm of rainfall. This signal is robust, relatively immune to electrical noise and able to travel long distances with no signal loss.

The tipping mechanism is machined from Brass and then Gold plated meaning no water remains following each tip of the bucket.  This in turn ensures that each and every tip is accurate and consistent in volume.

The gauge is also fitted with filters in the receiver and both outlets to prevent debris (e.g. leaves, dirt, insects) from entering the working parts of the instrument in addition to a syphon to control and maintain a constant flow-rate into the bucket mechanism.  The syphon is specifically designed to enhance accuracy at very high rainfall rates.  The syphon can easily be taken apart to clean, which means the unit is simple to maintain in optimum condition.

TBRG Models Available:
Environdata can supply the RG12 in 2 versions so there is a model to best suit your needs:

  1. RG12RM 3 wire, Hall Effect sensing, for exceptional field life and reliability.  The pulse output is stretched to 250 milliseconds in duration, and debouncing is automatic, so your signal is clean and simple to read.  This is the model that we supply as standard with our Weather Stations.  To use on a third party system, the RGC12 Converter may be required, ask us for more information.
  2. RG12R2 Dual Reed Contact model, which is simple to connect to your control system and where you need a traditional 2 wire connection.

We also offer our Rain Gauge Converter, RGC12.  This accepts either a 2 wire or 3 wire (Hall Effect sensing) rain gauge and provides both a relay and four different electronic outputs.  This simplifies direct connection to any RTU, PLC or SCADA System. The relay has two changeover contact sets and the electronic outputs will match your input voltages automatically.

Additional Options include Heaters for operation in freezing conditions, and different funnel sizes or calibrations for specialty applications.  Talk to us about your needs and we will assist with a Rainfall monitoring solution to suit your application.