A SENSOR ARRANGEMENT FOR A VORTEX SHEDDING FLOWMETER

摘要

A sensor arrangement for a vortex shedding flowmeter comprises a sensor housing (9) connected to a flowmeter housing (22) and defining an internal sensor space. A sensor beam (10) has an upper portion (10a) extending into the sensor space and a lower portion (10b) extending through the flowmeter housing (22) into a fluid flow space (100). A diaphragm (23) resiliently carries the sensor beam (10) which is movable in response to the passage of vortices in the fluid flow space (100) past the sensor beam (10). A mounting bracket (1) is detachably connected to the sensor housing (9) and carries a sensor assembly (24). The sensor assembly (24) is operatively connected to the upper portion (10a) of the sensor beam (10) but can readily be engaged therewith and disengaged therefrom to permit replacement of the sensor assembly and the mounting bracket (1). In this way if the sensor assembly (24) fails, it can be replaced without stopping the flow of fluid in the fluid flow space (100) or disturbing the sensor beam (10).