APPARATUS FOR CONTINUOUSLY MONITORING LIQUID LEVEL CONDITIONS IN A LIQUID-VAPOR SEPARATING DEVICE

摘要

An apparatus (100) for providing information concerning a condition of a vessel such as a steam drum (12) which segregates steam and liquid from one another includes a liquid contact assembly (102), a signal generator element (130), and a housing (112) and a conduit (114) for enclosing the signal generator element (130) in a substantially leak proof manner within the vessel space. The liquid contact assembly (102) is disposable at a first vessel location in the steam drum (12) and has a vibration component (108) operable to vibrate at natural frequencies which vary as a function of a predetermined characteristic of the liquid at the first vessel location and a support component (110) for supporting the water contact assembly (102) in contact with the liquid at the first vessel location. The signal generator element (130) generates a signal indicative of a natural frequency of the vibration component (108).