| 摘要 |
<p>Two capacitive-sensor-based level sensors (6) are fixed to a bulkhead (2) constituting the inclining face part of a lower stool (3) while differentiating the height from a lower deck (4). A detection electrode forming the sensor end (7) of the level sensor (6) is projected by about 15 mm into the hold (5). The projection end is covered with a cover (14). The cover (14) has a small hole (15) above the sensor end (7) and an open bottom part to which a closing plate (16) can be fixed removably by means of bolts, or the like. A sensor body, e.g. an amplifier, is housed in the case (10) of the level sensor (6) and led to a bridge and an inundation control place by means of a lead wire (12).</p> |
