WATER LEVEL MEASURING STRUCTURE AND WATER LEVEL MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a water level measuring structure being simply and inexpensively installed in a sewage pipe.SOLUTION: A transparent tube 13 is attached to an inner peripheral surface 11 of an opening part 7 of a sewage pipe 1 along the circumferential direction so as to be formed into a C shape. The tube 13 has a water inlet/outlet 19 at a lower end located at a width-directional center so as to match a bottom part 17 of the inner peripheral surface 11 of the sewage pipe 1. A colored liquid 21 with a small specific gravity is injected at the width-direction both sides of the tube 13 so as to float on sewage 3 entering into the tube 13 from the sewage pipe 1 via the water inlet/outlet 19.SELECTED DRAWING: Figure 2