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:
Sep. 18, 2018
Filed:
Oct. 29, 2013
Endress + Hauser Gmbh + Co. KG, Maulburg, DE;
Romuald Girardey, Blotzheim, FR;
ENDRESS+HAUSER SE+CO. KG, Maulburg, DE;
Abstract
A field device for determining or monitoring a process variable in automation technology. The field device meets a safety standard, which is required in a predetermined safety-critical application, comprising: a sensor, which works according to a defined measuring principle; and a control/evaluation unit, which processes and evaluates measurement data delivered by the sensor along at least three redundant and/or diversely designed measurement channels, wherein a redundant analog electrical current interface is provided, via which an electrical current representing the process variable is settable in a two-wire line. The analog electrical current interface is designed triply redundantly wherein the following components are associated with the analog electrical current interface: three electrical current setting channels connected in parallel, a doubly redundant voter, which detects a malfunction in one of the measurement channels and/or the electrical current setting channels a doubly redundant turn off stage, via which a measurement channel, respectively an electrical current setting channel, is turned off, when the voter detects a malfunction in the measurement channel or in the electrical current setting channel.