Measuring and testing – Liquid level or depth gauge
Patent
1996-09-27
1997-09-09
Cummings, Scott
Measuring and testing
Liquid level or depth gauge
367152, 367162, 310324, 310326, G01F 2328
Patent
active
056644566
ABSTRACT:
This ultrasonic transducer has a high chemical resistance and a small diameter and can be used over a very wide temperature range. It has a single-piece, can-shaped housing (1) sealed off by a diaphragm (12), a sensor element (2), arranged in the housing (1), for transmitting and receiving ultrasound, a matching layer (3) arranged between the diaphragm (12) and the sensor element (2), a stress equalizing layer (5) which completely encloses the sensor element (2) apart from a front area adjoining the matching layer (3) and is made of a thermosetting plastic, especially of an epoxy resin, a clamping ring (4) coaxially enclosing the matching layer (3), and a damping layer (6) that fills a cavity that remains in the housing (1) and is bounded by the clamping ring (4), the stress equalizing layer (5) and the housing (1).
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Cummings Scott
Endress+Hauser GmbH+Co.
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