Corrosion ratemeter

Details Corrosion ratemeter Corrosion ratemeter

1976-08-16

1977-08-09

Mack, John H.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

G01N 2746, G01N 2726

Patent

active

040409317

ABSTRACT:
An improvement to an automatic correcting type of corrosion ratemeter (e.g., U.S. Pat. No. 3,717,566) with test specimen, reference and third electrodes in contact with corrodant and "null" and "measurement" circuitry whereby correcting is made for freely corroding potential and addition of reference polarization potential between the test and reference electrodes in conjunction with controlled current flow between the test and third electrodes. The improvement comprises unique circuitry for common base, steady state readouts eliminating asynchronous cycle time problems and providing precise simultaneous readout(s) calibration.

REFERENCES:
patent: 3661750 (1972-05-01), Wilson
patent: 3716460 (1973-02-01), Weisstuch et al.
patent: 3717566 (1973-02-01), Wilson
patent: 3730869 (1973-05-01), Wilson
patent: 3766042 (1973-10-01), Wilson

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