| 摘要 |
<p>The concentration of a liquid in a liquid supply tube, which is supplied with the liquid, is stably measured from the outside of the liquid supply tube. A liquid component concentration meter is provided with a liquid supply tube (14, 16) adapted to be supplied with a liquid; a light transmission unit (15) provided midway through the liquid supply tube (14, 16); a light emission unit (9, 22) for irradiating measurement light to the light transmission unit (15); a light reception unit (10, 23) for receiving measurement light passed through the light transmission unit (15); a support member (31) adapted to movably support the light emission unit (9, 22) and the light reception unit (10, 23) in such a way that a measurement position (32) is moved along the light transmission unit (15), wherein the measurement position (32) is a position at which light is irradiated to the light transmission unit (15) and, also, is a position at which the light passed through the light transmission unit (15) is received by the light reception unit (23); a measurement-position moving mechanism (2) for moving the support member (31) in such a way that the measurement position (32) is moved within a predetermined area in the light transmission unit (15); and a data processing unit adapted to acquire data of intensities of light received by the light reception unit (10, 23) at a plurality of measurement positions (32) and to calculate the concentration of the liquid flowing through the liquid supply tube (14, 16), based on the plural intensities of received light.</p> |
