Optimization of Calibration Procedure for an Optoelectronic Precipitation Gage

The dependence of the optical precipitation gage calibration results on the size of reference objects is analyzed. Ways to optimize the calibration procedure are suggested, including: reducing the number of calibration zones; use of calibration coefficients instead of correction parameters; additional calibration with balls 1 mm in diameter; use of the coefficients dependent on the diameter measured for particles smaller than 2 mm. The conclusion is drawn about the efficiency of the calibration procedure suggested for optoelectronic devices designed to measure the size of small particles, for example, a snowstorm parameter gage.