Since the error is systemic, it can be eliminated by using correction calculation. In order to perform this, the characteristic error curve must be known. This can be determined by calibrating a representative number of rain gauges of the selected type. From the calibration data, the correction function may be built-up.
MicroStep-MIS has come up with a solution of building the correction function into a small electronic device called RGC. This microprocessor-based part can be contained in a rain gauge, collecting tips from the tipping bucket and adding an extra tip when needed. By using RGC, it is possible to make the rain gauge fit within a 2 to 3 % error range.
RGC is designed to be small, waterproof, and energy-efficient. It has a wide temperature range and also a wide power supply range to fit in the existing systems.
