Process variable transmitter with diagnostics
CA 2615293 C · Owner: Rosemount, Inc. · Inventors: Lamothe, Ross C.; Wiklund, David E.; Miller, John P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process variable transmitter (60, 82 230, 232, 234, 238) with diagnostics , based on power spectral density (PSD) analysis of a process variable sensor signal is provided. In one embodiment, the process variable transmitter (60 82, 230, 232, 234, 238) is a pressure transmitter (82) and the diagnostics are used to diagnose impulse line obstruction or impending obstruction. Other diagnostics are also useful such as diagnosing primary element degradation. The sensor signal is digitized and the digitized signal is transferred into the frequency domain. The power of the frequencies on the sensor signal is examined to provide the enhanced diagnostics. In one aspect diagnostics are …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 14, 2006 and granted March 29, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.