Rain Gauge

The RG rain gauge is one of the hydrological and meteorological instruments used to measure the nature of rainfall, or as it is called precipitation. It is measuring the amount of water that falls to the earth’s surface originating from atmospheric moisture, either in a liquid state or in a solid. This sensor transforms the precipitation into a pulsed output signal.

Mode of operation

The precipitation is captured in the 160mm diameter collecting funnel and passed through a distribution pipe to fill a tip bucket device made of injection molded ABS. Once the bucket is “full”, it pivots and empties. This action magnetically closes and opens a reed switch, sending a pulse signal to the datalogger. As a result of this tipping, the other side of the bucket is aligned to receive the flow from the distribution pipe. This cycle of registration and tipping continues with the rain.