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. 15, 2011
Filed:
Aug. 13, 2009
Jörg Kiesbauer, Eppertshausen, DE;
Domagoj Vnucec, Mannheim, DE;
Jörg Kiesbauer, Eppertshausen, DE;
Domagoj Vnucec, Mannheim, DE;
Samson AG, Frankfurt am Main, DE;
Abstract
The invention relates to a method for monitoring the functionality of an actuator () having a pneumatic drive (), in particular for monitoring an actuator () for a safety valve, including a magnetic valve () for controlling the pneumatic drive (), wherein the magnetic valve () is monitored by means of a pressure measurement and is, for this purpose, connected to a first pneumatic conduit () to a position controller () of the actuator () as well as to the pneumatic drive () to a second pneumatic conduit (). The magnetic valve () is switched off and on again with a switching time (t-t). The switching time (t-t) of the magnetic valve () is detected at which, at the one hand, the switching time (t-t) is so short that the position of the actuator () remains essentially constant or unchanged and, on the other hand, it is, however, so long that a pressure drop (dp=P-P) in the first pneumatic conduit () in front of the magnetic valve () is present after switching the magnetic valve () on again.