| 摘要 |
PURPOSE:To obtain a device which makes a maintenance check on a detection part while securing detection precision by arranging a coule of pipe member, deviated at a prescribed angle, at a flow passage for a fluid to be measured, and then attaching flow rate detecting elements in the inside of them detachably. CONSTITUTION:A couple of pipe members are arranged, opposite each other, on the same axial line deviated previously at an angle theta in the wall of a water channel wherein a fluid to be measured is transported. Each pipe member is fitted with a valve device, and a flow rate detection body connected to a flow meter body is inserted detachably into the end part of the pipe member. For example, embedded pipes 34 and 34 arranged oppositely in a cluvert 30 each have a fitting flange 40 at an end part 38 to fit a valve 42, and a short pipe 44 is fitted in a watertight state through a flange 46. Then, an insertion pipe 48 is equipped,and a fluid contact type probe 52 equipped in the insertion pipe extends into a flow passage at an opening part 50; and a fitting flange 54 at the other end part is engaged in a watertight state with the flange 56 of the short pipe, and an O ring 58 is provided between the short pipe 44 and insertion pipe 48. |
