| 摘要 |
<p>PURPOSE: To accurately measure moisture regardless of change in material and the like for an object and the like to be measured. CONSTITUTION: The light of a light source 1 is projected to a measured object 3 through a projecting lens 2, transmitted light or reflected light is injected to a detection element 6 by a condensing lens 4 through filters 51 and 52 provided for a rotating sector 5, which have the comparison wave lengths ofλ1 andλ3 free from moisture and the like, and the measuring wave length ofλ2, its output signal is amplified by an amplifier 7, it is then transformed into signals R1, S and R2 corresponding to the respective wave lengths by a signal separation and rectifier 8 so as to be separately taken out by a synchronous signal generator 9, and its moisture percentage is then operated by an operating means 10 through an integrated analytical curve.</p> |
