A SENSOR FOR MEASURING THE LEVEL OF A MEDIUM

摘要

A sensor (1) for measuring the level of a medium (9) in a vessel, the sensor including: a sensor body (1) disposed in said vessel for at least partial immersion in said medium (9), said sensor body (1) having a first fluid (5) and a second fluid (11) contained therein, said first and second fluids being immiscible and said second fluid (11) having a specific gravity less than said first fluid (5) for maintaining the first fluid at the base of the sensor body, said sensor body (1) further including a flexible portion (3B) for adjusting the level of said first fluid in said sensor body in response to pressure exerted by said medium, and a means (7) for detecting the level of said first fluid in said sensor body.