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51316-7737-Corrosion Probe Metal Loss Rate Sensor Using a Mechanical Oscillator

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Product Number: 51316-7737-SG
ISBN: 7737 2016 CP
Author: Nicholas Smeets
Publication Date: 2016
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This work describes new corrosion probe technology for the measurement and detection of corrosion metal mass loss. This probe may be applied to the detection of metal-loss by corrosion and/or erosion species in single or multiphase fluids. The actual service environment may be aqueous hydrocarbon or a combination. The sensing element is a mechanical oscillator (e.g. tuning fork) whose resonance parameters change as a function of mass loss and deposition. By fabricating the tuning fork tines from multiple materials it is possible to minimize the impact of depositions such as corrosion by-products enabling direct measurement of metal loss and corrosion rate. Experimental data are presented demonstrating probe performance in single and two phase flows. Data also demonstrate long term stability in the absence of corrosion. Test temperatures range from ambient to 650°F. Because of the tuning fork design robustness and stability it is anticipated that this approach could offer considerable benefits over conventional electrical resistance (ER) and linear polarization resistance (LPR) technology. The robustness of the sensor enables high sensitivity and long life which is typically not possible with ER technology.
This work describes new corrosion probe technology for the measurement and detection of corrosion metal mass loss. This probe may be applied to the detection of metal-loss by corrosion and/or erosion species in single or multiphase fluids. The actual service environment may be aqueous hydrocarbon or a combination. The sensing element is a mechanical oscillator (e.g. tuning fork) whose resonance parameters change as a function of mass loss and deposition. By fabricating the tuning fork tines from multiple materials it is possible to minimize the impact of depositions such as corrosion by-products enabling direct measurement of metal loss and corrosion rate. Experimental data are presented demonstrating probe performance in single and two phase flows. Data also demonstrate long term stability in the absence of corrosion. Test temperatures range from ambient to 650°F. Because of the tuning fork design robustness and stability it is anticipated that this approach could offer considerable benefits over conventional electrical resistance (ER) and linear polarization resistance (LPR) technology. The robustness of the sensor enables high sensitivity and long life which is typically not possible with ER technology.
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