A System for Measuring Micro-bubble Diameter by Image Analysis
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Accession number;03A0400071
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| Title;A System for Measuring Micro-bubble Diameter by Image Analysis |
| Author;
HIROTA YUTAKA
(Tokyo Univ. Fisheries, JPN)
YADA SADAMI
(Tokyo Univ. Fisheries, JPN)
TODA MASAYOSHI
(Tokyo Univ. Fisheries, JPN)
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Journal Title;J Tokyo Univ Fish
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Journal Code:G0466A
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ISSN:0040-9014
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VOL.89;NO.;PAGE.37-44(2003)
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| Figure&Table&Reference;FIG.7, TBL.2, REF.19 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;To measure micro-bubble diameter below 200.MU.m, we developed a measuring system by an image analyzer. In this paper, we measured the standard corpuscles below 50.MU.m and micro-bubbles generated by an aerator to verify measurement precision. The results are summarized as follows. 1. In theory, the available measuring range of micro-bubble diameter with this system is 1.88-450.MU.m, the resolution per pixel is 0.94.MU.m. 2. When micro-bubbles generated by an aerator were measured with this system, the mean value of micro-bubble diameter was 23.3.MU.m, and the coefficient of variation was in 4.4-7.9% for micro-bubble diameter of 10-30.MU.m. 3. Micro-bubble diameters below 200.MU.m was able to be measured by arbitrary locating water-immersion object lens inside the water tank. 4. This system can be acquired at lower cost than the liquid born particle counters of laser light barrier type by 2-20%. (author abst.) |
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