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:
Feb. 12, 2019
Filed:
Jul. 17, 2017
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Roland Kube, Schwuelper, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Abstract
A fluid measuring device includes a measuring head device having a measuring head with separated and electrically insulated electrodes and measuring head contacts each connected to a respective electrode. A measuring circuit includes terminal contacts each connected to a respective measuring head contact. The measuring circuit includes a current source for pulsed energizing of the measuring head connected to the terminal contacts. The measuring circuit includes an output circuit between the terminal contacts including a measuring capacitor and an evaluation circuit ascertaining state-of-charge information regarding the measuring capacitor. A supplementary circuit in the measuring head is connected to the measuring head contacts and establishes basic capacitance and resistance properties therebetween corresponding to capacitance and resistance properties between the measuring head contacts upon contact with predefined partial wetting of the electrodes by conductive fluid having predefined conductivity without the supplementary circuit. A measuring head device is also provided.