| 摘要 |
PROBLEM TO BE SOLVED: To provide a straight-tube type coriolis flowmeter capable of dispersing axial stress acting on flow tubes. SOLUTION: The straight-tube type coriolis flowmeter 21 includes a straight-tube type flow tube 3, a drive unit 7 for drive in tertiary mode oscillation, a pair of detection means 8 for detecting a phase difference proportional to a Coriolis force, a seating 22 having rigidity, and an elastic connection means 23 having elasticity. The elastic connection means 23 is both an elastomer of a structure having lower rigidity in the direction of a Z-axis than each rigidity in the direction of an X-axis and the direction of a Y-axis and an elastomer of a structure having lower rigidity in the direction of rotation on the Y-axis than each rigidity in the direction of rotation on the Z-axis and the direction of rotation on the X-axis (wherein the axial direction of the flow tube 3 is the Z-axis; the driving direction of the drive unit 7 is the X-axis; the direction that intersects with the Z-axis and the X-axis at right angles is the Y-axis). COPYRIGHT: (C)2007,JPO&INPIT
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