The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 07, 2006
Filed:
Jun. 19, 2002
Olaf Textor, Schopfheim, DE;
Olaf Textor, Schopfheim, DE;
Endress — Hauser GmbH + Co. KG, Maulburg, DE;
Abstract
A pressure transmitter for transfer of a pressure prevailing in a first medium onto a second medium, including a pressure chamberin a platform, which chamber is separated from the first medium by means of a dividing membrane, wherein the pressure can be transferred by means of the second medium to a pressure measurement cell. For timely recognition of an impending failure of the dividing membrane, an early warning detector is provided with a sensor chamberhaving an opening, which faces the first medium; and a sensor, which monitors a property of a medium container in the sensor chamber; and a barrier facing the first medium, pressure-tightly sealing the opening, and which, under contact with the first medium and equal conditions as experienced by the dividing membrane, fails earlier than the dividing membrane, thus making possible a flow connection between the sensor chamberand the first medium. Preferably, the barrier is in the form of a sacrificial membrane, which is thinner than the dividing membrane. In this way, it is to be expected that, under corrosive destruction of the membranes, the sacrificial membranewill be destroyed earlier than the dividing membrane