Method and apparatus for monitoring the effectiveness of corrosi

Details Method and apparatus for monitoring the effectiveness of corrosi Method and apparatus for monitoring the effectiveness of corrosi

1977-12-30

1979-04-03

Weisstuch, Aaron

Chemistry: electrical and wave energy

Processes and products

123 4115, 324 65CP, 204195C, 340 59, G01N 2746, F01P 514

Patent

active

041475968

ABSTRACT:
A sensor is adapted to be mounted so that it comes in contact with coolant fluid of a vehicular cooling system. When the corrosion inhibiting characteristic of the fluid is effective to prevent corrosion a first potential range is produced whereas when the characteristic is ineffective a second range exists. The effectiveness of the inhibiting characteristic can be displayed in the form of a high impedance voltmeter mounted in the dashboard or other convenient location or indicating means such as a light can be actuated when the potential reaches a threshold level indicating that the inhibiting characteristic is not effective to prevent corrosion. The sensor comprises a reference electrode used with a single sensor electrode on one embodiment and with a pair of sensor electrodes in a second embodiment.

REFERENCES:
patent: 3197388 (1965-07-01), Marsh et al.
patent: 3649472 (1972-03-01), Morrissey et al.
patent: 3725212 (1973-04-01), Kawamoto et al.
patent: 3748247 (1973-07-01), Weisstuch
patent: 3832982 (1974-09-01), Guehr
A. Weisstuch et al, "Effectiveness of Cooling Water Treatments as Galvanic Corrosion Inhibitors," Materials Protection Performance, vol. 11, pp. 23-26 (1972).
M. S. Walker et al. "New Method Developed for Monitoring Automotive Cooling System Corrosion," Materials Protection, pp. 47-52 (1969).

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