| 摘要 |
PURPOSE:To obtain the flowmeter having no movable part, by forming vortex by a turnaround part, detecting the frequency of its vibration, and measuring the flow rate. CONSTITUTION:A case main body 1 is constituted by a base 2 and a cover 3. An oscillating chamber 4 comprising a concave part is provided in the base 2. An input port 5 is provided at one end of the chamber and an output port 6 is provided at the other end. The opening part of the upper surface of said oscillating chamber 4 is covered by a cover 3 and hermetically sealed. The turn-back part 7 comprising a crescent shaped protruded part is provided at the central part of the oscillating chamber 4. A sensor 9 which counts the frequency of the vibration generated by the vortex is provided in the vicinity of the turn-back part 7. |
