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Electrochemical noise as a localized corrosion indicator

A localized corrosion, electrode technology, applied in the direction of material electrochemical variables, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of invasion, the operator cannot effectively give local corrosion and so on

Inactive Publication Date: 2011-07-20
PEPPERL FUCHS GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, existing methods have proven to be ineffective in practice for monitoring system or plant operators to give a clear indication of the presence or absence of localized corrosion attack
Conversely, to interpret the recorded variation of a localized corrosion parameter over time to assess whether a particular behavior of such a parameter indicates that localized corrosion is occurring requires a certain degree of experience

Method used

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  • Electrochemical noise as a localized corrosion indicator
  • Electrochemical noise as a localized corrosion indicator
  • Electrochemical noise as a localized corrosion indicator

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Embodiment Construction

[0030]Several embodiments or implementations of the present invention are described below with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout and wherein the various features and figures are not necessarily drawn to scale. The present disclosure relates to a programmable low power corrosion measurement field device for providing corrosion measurement and monitoring utilizing one or more advanced corrosion measurement types to provide a for real-time corrosion monitoring and / or offline corrosion data logging as a stand-alone device with the ability to download stored corrosion data to user communication devices, USB memory sticks, micro SD cards, etc. Recorded conductance, general corrosion and / or localized corrosion values,.

[0031] first reference Figure 1A and Figure 1B , according to one or more aspects of the present disclosure in Figure 1A An exemplary localized corrosion measurement system 2 is schematically ...

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Abstract

Systems and methods are presented for a method for measuring or monitoring localized corrosion in which an electrochemical noise (ECN) signal is sensed and filtered by a high-pass or band-pass filter to remove low frequency components not related to localized corrosion and a standard deviation of the filtered signal is computed and scaled to provide a localized corrosion value.

Description

[0001] References to related applications [0002] This application claims priority to and benefits from U.S. Provisional Patent Application No. 61 / 077,551, filed July 2, 2008, entitled "ELECTROCHEMICAL NOISE AS A LOCALISED CORROSION INDICATOR," which is incorporated by reference in its entirety . [0003] This application is related to U.S. Patent No. 7,282,928, filed July 13, 2006, entitled "CORROSION MEASUREMENT FIELD DEVICE WITH IMPROVED LPF, HAD, AND ECN CAPABILITY"; CALIBRATING CORROSION MEASUREMENT FIELD DEVICE WITH IMPROVED SIGNAL MEASUREMENT AND EXCITATION CIRCUITRY" U.S. Patent No. 7,265,559; U.S. Patent No. 7,239,156 filed on July 13, 2006 entitled "CONFIGURABLE CORROSION MEASUREMENT FIELD DEVICE"; US Patent No. 7,245,132, filed on the 12th, entitled "INTRINSICALLY SAFE CORROSION MEASUREMENT AND HISTORY LOGGING FIELD DEVICE," which is also incorporated by reference in its entirety. technical field [0004] The present disclosure relates generally to corrosion meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/08G01N27/26
CPCG01N17/02
Inventor 卡雷尔·赫拉德基罗尔夫·韦塞尔斯
Owner PEPPERL FUCHS GMBH
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