| 摘要 |
PROBLEM TO BE SOLVED: To easily alter and widen a range of the detection of water level differences without having to upsize the size, and to reduce costs, facilitate a monitoring work, and improve safety. SOLUTION: The water level difference meter for detecting a water level difference between a water level of a first channel and a water level of a second channel comprises: a first pulley for converting vertical movements of a first float associated with changes in the water level of the first channel into rotational movements; a second pulley for converting vertical movements of a second float associated with changes in the water level of the second channel into rotational movements; a first speed reducing mechanism having a first rotating plate for reducing the speed of the first pulley and transmitting a rotational force of the same; a second speed reducing mechanism having a second rotating plate for reducing the speed of the second pulley and transmitting a rotational force of the same; and a detecting means which operates when the water level difference exceeds a prescribed range in the case that at least the water level of the first channel is higher than the water level of the second channel. COPYRIGHT: (C)2005,JPO&NCIPI
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