Patent ID: 9625384
Date: 2017-04-18
CPC Classifications: G01N

Claim:
1. A dryness fraction measuring device, comprising: a variability quantity measuring portion that measures the amount of variability in intensity of light that has been transmitted, or amount of light that has been absorbed, by moist steam that is the subject of measurement; a dryness fraction measuring portion that measures the dryness fraction of the moist steam based on a correlation relationship between the dryness fraction and the amount of variability in the optical intensity or in the amount of light absorption; and a pressure measuring portion that measures a pressure of the moist steam; wherein: the correlation relationship is a correlation relationship between the dryness fraction and the amount of variability in the intensity of light, or in the amount of light absorbed, corresponding to a pressure of the moist steam; and the dryness fraction measuring portion measures the dryness fraction of the moist steam based on the correlation relationship corresponding to a measured pressure of the moist steam.