Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2005-06-06
2008-12-16
Nguyen, Vincent Q (Department: 2831)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C205S775500, C204S404000
Reexamination Certificate
active
07466149
ABSTRACT:
An electronic system and software program for multielectrode electrochemical devices; a multielectrode sensor for application in environments containing electrochemically active species; and a multielectrode sensor with a built-in removable large electrode. The electronic system has a large electrode connected to the coupling joint through a resistor element to adjust the potential of the multielectrodes. The electronic system, along with the software program, automatically changes the values of the coupling resistors so that the potentials of a group of electrodes or all the electrodes of a sensor are similar, or automatically disconnects malfunctioning electrodes from the coupling joints to avoid the effect of such electrodes. A variation of the electronic system uses an ammeter or a zero-resistance-ammeter to measure the coupling currents and has resistors between the electrodes and the coupling joint to reduce the transient current produced during switching. The software program also keeps track of the cumulative charge for each electrodes of the multielectrode device so that the cumulative corrosion depth or electrodeposition thickness can be calculated based on the cumulative charge from each electrode. The multielectrode sensor for applications in an environment that contains electrochemically active species has a dual-sensor design, which allows the removal of the signals due to the reactions of the electrochemically active species.
REFERENCES:
patent: 2947679 (1960-08-01), Marsh et al.
patent: 3259461 (1966-07-01), Griffin, Jr. et al.
patent: 4349879 (1982-09-01), Peddie et al.
patent: 4667150 (1987-05-01), Hausler et al.
patent: 5015355 (1991-05-01), Schiessl
patent: 6132593 (2000-10-01), Tan
patent: 6683463 (2004-01-01), Yang
patent: 6690182 (2004-02-01), Kelly et al.
U. Steismo, T. Rogne and J. M. Drugli, “Aspect of Testing and Selecting Stainless Steels for Sea Water Applications,” Corrosion/94, Paper No. 492, Houston, TX: NACE International, 1994.
Y.J. Tan, “A New Crevice Corrosion Testing Method and its Use in the Investigation of Oil Stain,” Corrosion, vol. 50, No. 4, pp. 266-269, 1994.
Z. Fei, R.G. Kelley and J.L. Hudson, “Spatiotemporal Patterns on Electrode Arrays,” Journal of Phys. Chem., vol. 100, No. 49, pp. 18986-18991, 1996.
Y.J. Tan, “Monitoring Localized Corrosion Processes and Estimating Localized Corrosion Rates Using a Wire-beam Electrode,” Corrosion, vol. 54, No. 5, pp. 403-413, 1998.
L. Yang et al. “An in-situ Galvanically Coupled Multielectrode Array Sensor for Localized Corrosion,” Corrosion, vol. 58, No. 12, pp. 1004-1014, 2002.
L. Yang and N. Sridhar, “Coupled Multielectrode Online Corrosion Sensor,” Materials Performance, vol. 42, No. 9, pp. 48-52, 2003.
H. Eren, et al., “An Auto-Switch for Multisampling of a Wire Beam Electrode Corrosion Monitoring System,” IEEE Transactions on Instrumentation and Measurement, vol. 47, No. 5, pp. 1096-1101, 1998.
Corr Instruments, LLC.
Nguyen Vincent Q
Zhu John
LandOfFree
Electronic system and software for multielectrode sensors... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electronic system and software for multielectrode sensors..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic system and software for multielectrode sensors... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4042410