| 摘要 |
PROBLEM TO BE SOLVED: To provide a multitube-structured straight tube type Colioris flowmeter capable of stabilizing a standing wave. SOLUTION: This multitube-structured straight tube type Colioris flowmeter 21 is a straight tube type Colioris flowmeter forming structure having a cylindrical body or the like in an outside of a resonance system by double tube structure comprising a flow tube 3 and a counter balance 4, i.e. forming triple tube structure in an inside of an outer cylinder 2 as a flowmeter casing. When a drive unit 7 is resonance-driven, the standing wave is generated in the resonance system comprising double tube structure of the flow tube 3 and the counter balance 4. The standing waves are also generated between an enlarged opening part 9 and a fixing plate 23, and between a connection position of a plate spring 6 and the fixing plate 23, in response to a driving frequency. The standing wave of fifth order is generated when the drive unit 7 is resonance-driven. A disturbance noise is buffered once with the standing wave between the connection position of the plate spring 6 and the fixing plate 23. COPYRIGHT: (C)2007,JPO&INPIT
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