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. 22, 2022
Filed:
May. 10, 2019
Endress+hauser Se+co. KG, Maulburg, DE;
Dietmar Frühauf, Lörrach, DE;
Armin Wernet, Rheinfelden, DE;
Endress+Hauser SE+Co. KG, Maulburg, DE;
Abstract
Disclosed is a method for diagnosis of a two-conductor field instrument and a corresponding two-conductor field instrument. In a normal operating mode, an input voltage is provided and an output current is output. In a diagnostic operating mode, the method includes: providing a first diagnosis-input voltage and outputting a first diagnosis-output current during a first time interval, providing a second diagnosis-input voltage and outputting a second diagnosis-output current during a second time interval, determining the second time interval from the first time interval, registering a first and second diagnosis-output voltage as a function of the first and second diagnosis-output current, and checking the functionality of the two-conductor field instrument by the first and second diagnosis-input voltage, the first and second time interval, the first and second diagnosis-output electrical current, the first and second diagnosis-output voltage based on the input voltage and/or based on the output electrical current.