Aerodynamic Raingauge (ARG)

The ARG was designed by the Institute of Hydrology with a profile very similar to that derived theoretically and independently by the UK Meteorological office as an “ideal shape”. A conventionally shaped raingauge interferes with the airflow so that the catch is reduced. The ARG minimises this effect due to its aerodynamic shape and reduced side area to the wind, thus increasing accuracy.

The ARG is a low-cost rainguage manufactured in UV resistant plastic by vacuum forming technique, that allow costs to be minimised while producing a very rugged instrument of comparable precision to more expensive gauges.

The collected rain is measured by the well-proven tipping bucket method which provides a contact closure at each tip.

The ARG is compatible with VF and Hawk series dataloggers with the option of telemetry.

Funnel Diameter 254mm (10.0 inches)	Funnel Rim Height 340mm (13.4 inches)
Tip Sensitivity Standard 0.20mm per tip, or 0.25mm if required	Output Contact Closure
Power Requirements None	Weight 1000 gms
Max Allowable Current Through Reed 300mA, non inductive