CONCENTRATION-FACTOR MEASUREMENT DEVICE, CONCENTRATION-FACTOR MEASUREMENT METHOD, AND WATER-QUALITY-INDEX-VALUE MEASUREMENT METHOD

摘要

Provided are a concentration-factor measurement device and method for accurately calculating the concentration factor of circulating water, and a method for measuring the water-quality index value of the circulating water. This concentration-factor measurement device has a light-absorbance measurement unit (1) for irradiating cells (12A-12C) with light and measuring the absorbance thereof; and an electrode measurement unit (2) equipped with electrodes (16, 17) to be inserted into the water sample in a container (20). For each water quality item, the device calculates concentration factors on the basis of a measured value measured when the water sample (W) is the circulating water, and a measured value measured when the water sample (W) is makeup water. A plurality of concentration factors are calculated on the basis of the measured values for the multiple types of water quality items; hence, it is possible to obtain an accurate concentration factor.