MOISTURE DENSITY MEASUREMENT METHOD, AND MOISTURE DENSITY MEASUREMENT DEVICE

摘要

PROBLEM TO BE SOLVED: To measure moisture of high density quickly and with high accuracy.;SOLUTION: The present invention is configured to use a wavelength modulation spectroscopy method to obtain a peak value (2pf) of a 2p-order differential wave of an absorption waveform obtained from a light reception device modulation spectroscopy method by waveform computation means such as a lock-in amplifier and the like, and a peak value (2qf) of a 2q-order differential wave (p and q are an integer number, and pq); obtain the 2pf signal peak value/the 2qf signal peak value by function computation means from an output of the lock-in amplifier; and obtain corresponding moisture density from a function letting the (2pf)/(2qf) be a variable (x). Let the function be 2pf/2qf=x, and let B be x^n or log(x)^n, then, typically a moisture vapor pressure (y)=ΣA_nB. Thanks to this processing, moisture density of high density can be quickly obtained with high accuracy.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT