STANDARD CALIBRATION DEVICE AND METHOD OF RAIN GAUGES BY WEIGHING

摘要

According to the present invention, by supplying water to which the standard rainfall is calculated according to the measurement environment such as the mass of water and water temperature, and comparing it with the rainfall measured by the rainwater to be calibrated, the accuracy of the rainwater to be calibrated is determined. The present invention relates to a standard calibration apparatus and a calibration method of a rain gauge using mass measurement.;The standard calibration apparatus of the rain gauge using the mass measurement according to the present invention is a standard calibration apparatus of a rain gauge that enables the rain gauge to be calibrated by measuring the uncertainty of the rain gauge, and storing water to be supplied to the calibration rain gauge 60. A test tank (10) of transparent material to be made; A recovery tank 65 for receiving and storing water discharged from the rain gauge to be calibrated; Balance 21 for measuring the mass of water contained in the test tank 10, and the standard weight portion for loading or unloading the standard weight (22a) to the balance 21 to measure the sensitivity of the balance 21 A mass measuring unit 20 provided with 22; A water temperature measuring unit 30 for measuring a temperature of water contained in the test tank 10; An air environment measuring unit 40 for measuring an air environment around the test tank 10; The water supply unit 51 for supplying the water stored in the test tank 10 to the calibration rain gauge 60 according to the set conditions, and the water stored in the recovery tank 65 to the test tank 10 in accordance with the set conditions A water supply control unit 50 provided with a water recovery unit 52 for supplying; Analyze the data transmitted from the mass measuring unit 20, the water temperature measuring unit 30 and the atmospheric environment measuring unit 40 to calculate the standard rainfall supplied from the test water tank 10 to the calibration rain gauge 60, And a computer processor 70 for calculating an uncertainty of the rain gauge to be calibrated by comparing the calculated standard rainfall with the measured rainfall of the rain gauge 60 to be calibrated.