Menu
Search
Filters
Close
Menu

51313-02332-New Probe Combines ER LPR HDA Floating B-Constant Electrochem. Noise & Conductivity Measurements

Picture for New Probe Combines ER LPR HDA Floating B-Constant Electrochem. Noise & Conductivity Measurements
Available for download
Product Number: 51313-02332-SG
ISBN: 02332 2013 CP
Author: Jan Heselmans
Publication Date: 2013
$0.00
$20.00
$20.00

Electrochemical LPR (Linear Polarization Resistance) measurements are done on a large scale. A disadvantage of LPR is that localised corrosion cannot be measured. Besides the given (calculated) corrosion rate often is not callibrated to the real corrosion rate leading to a uncertainty factor. New probes have been developed in order to get more realistic corrosion rates for example the Corrtran of Pepperl and Fuchs measures HDA (Harmonic Distortion Analysis) a floating B-constant and electrochemical noise. Electrochemical noise measurements give information about the tendency for localised corrosion (pitting crevice corrosion and environmental cracking). With such modern and sophisticated electrochemical technology much more information is given compared to LPR only. However the uncertainty with regard to the real corrosion rate still remains.

This paper will describe the combination of sophisticated electrochemical technology with ER measurements (Electrical Resistance). The ER signal will allow callibration of the electrochemical data with regard to uniform corrosion rates. To achieve this in one 2" probe 3 LPR elements and 1 ER element are integrated. The instrument gives 4x 4-20 mA HART online signals to the DCS computer:

1. Uniform corrosion (ER)

2: Uniform corrosion (LPR floating B-constant and HDA)

3: Localised corrosion (EN)

4: Conductivity

The probes are standard 2" probes which fit in the hollow plugs as currently used in oil and gas and industry. Instrumentation is ATEX certified and probes are PED certified.

Electrochemical LPR (Linear Polarization Resistance) measurements are done on a large scale. A disadvantage of LPR is that localised corrosion cannot be measured. Besides the given (calculated) corrosion rate often is not callibrated to the real corrosion rate leading to a uncertainty factor. New probes have been developed in order to get more realistic corrosion rates for example the Corrtran of Pepperl and Fuchs measures HDA (Harmonic Distortion Analysis) a floating B-constant and electrochemical noise. Electrochemical noise measurements give information about the tendency for localised corrosion (pitting crevice corrosion and environmental cracking). With such modern and sophisticated electrochemical technology much more information is given compared to LPR only. However the uncertainty with regard to the real corrosion rate still remains.

This paper will describe the combination of sophisticated electrochemical technology with ER measurements (Electrical Resistance). The ER signal will allow callibration of the electrochemical data with regard to uniform corrosion rates. To achieve this in one 2" probe 3 LPR elements and 1 ER element are integrated. The instrument gives 4x 4-20 mA HART online signals to the DCS computer:

1. Uniform corrosion (ER)

2: Uniform corrosion (LPR floating B-constant and HDA)

3: Localised corrosion (EN)

4: Conductivity

The probes are standard 2" probes which fit in the hollow plugs as currently used in oil and gas and industry. Instrumentation is ATEX certified and probes are PED certified.

Product tags
Also Purchased
Picture for Failure Analysis of Bank Tubes of a Boiler
Available for download

51313-02330-Failure Analysis of Bank Tubes of a Boiler

Product Number: 51313-02330-SG
ISBN: 02330 2013 CP
Author: Saeed Al-Shahrani
Publication Date: 2013
$20.00
Picture for High-Performance “Green” High Shear Corr. Inhibitor w/Improved Emulsion for Gas Condensate Systems
Available for download

51313-02335-High-Performance “Green” High Shear Corr. Inhibitor w/Improved Emulsion for Gas Condensate Systems

Product Number: 51313-02335-SG
ISBN: 02335 2013 CP
Author: Ryan Harrington
Publication Date: 2013
$20.00
Picture for Modeling of Potential Distribution of Subsea Pipeline Under CP by Finite Element Method
Available for download

51313-02333-Modeling of Potential Distribution of Subsea Pipeline Under CP by Finite Element Method

Product Number: 51313-02333-SG
ISBN: 02333 2013 CP
Author: Paolo Marcassoli
Publication Date: 2013
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support