| 摘要 |
<p>PURPOSE:To make fine and efficient control for maintaining DO at an adequate value by continuously changing the rotating speed of an underwater stirrer. CONSTITUTION:The rotating number of an underwater motor 7 of the underwater aerating stirrer 5 is controlled by an inverter control device 10 to continuously change the rotating speed of the stirrer 5. As a result, the DO value is finely and continuously adjusted, by which the control with less fluctuations and without response delay is made possible.</p> |
