| 摘要 |
PROBLEM TO BE SOLVED: To suppress disturbance vibration without using specific vibration control alloy or the like for a fitting cylinder even when a large casing including a preamplifier part is placed on the fitting cylinder extended from a flowmeter body.SOLUTION: A vortex flowmeter includes: a vortex generator arranged in the flowmeter body oppositely to a flow of fluid; a sensor for detecting variation stress generated in the vortex generator; a preamplifier part for amplifying and shaping a signal outputted from the sensor in accordance with the variation stress and outputting a flow rate of fluid; and a fitting cylinder 5 for fitting the preamplifier part to the flowmeter body by inserting a lead wire from the sensor to the preamplifier part. The fitting cylinder 5 includes a base part 51 fixed on the flowmeter body and a cylindrical part 52 arranged on the base part 51 as different shapes, an upper end part of the base part 51 is formed as a shape having a projected cross selection, a lower end part of the cylindrical part 52 is formed as a shape having recessed cross section, and in a state that the upper end part of the base part 51 is engaged with the lower end part of the cylindrical part 52, the upper end part end face 51a of the base part 51 and the lower end part end face 52a of the cylindrical part 52 are slidably brought into contact with each other. |
