Mobrey Limited

Roy Colin Turner

Barry Albert Snowdon

The invention describes a vibrating element apparatus, preferably in the form of a tuning fork-type contact level transducer, and a method of forming the same. The tines of the transducer are vibrated by piezoelectric elements, which piezoelectric elements are arranged in a stack along with insulators and conductors to allow cyclic electrical signals to be applied thereto. The stack is provided as a sub-assembly allowing ready replacement in the field andwithout disturbing the installation of the transducer in the plant which it serves.

Vibrating element flow measurement apparatus

The invention describes a vibrating tine level detection device, and a method of forming the same, which is particularly suitable for operation in environments subject to rapid temperature change. A piezoelectric stack, which generates vibration of the tine, is located within a cage. The cage is, in turn, located within a hollow body defined by a diaphragm, from which the tines extend, and a wall section. The cage is attached to the inside surface of the wall section, adjacent to the junction between the wall section and the diaphragm. As a consequence, the ability of the cage to maintain a substantially constant compression on the piezoelectric stack is substantially unaffected by thermal expansion or contraction of the wall section.

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Berkshire, United Kingdom

Roy Colin Turner