Corrosion measurement with secondary temperature compensation

Details Corrosion measurement with secondary temperature compensation Corrosion measurement with secondary temperature compensation

G - Physics

01

N

324/45

G01N 17/00 (2006.01) G01N 27/04 (2006.01)

Patent

CA 1177537

ABSTRACT OF THE DISCLOSURE An electrical resistance type corrosion measuring probe has a test element exposed to a corrosive environment and an adjacent reference element protected from the environment. Electrical circuitry is connected to the elements for measure- ment of resistance ratio. This provides a corrosion output signal having a first order of temperature correction provided by the reference element. Secondary temperature compensation for dynamic or short term variation of temperature of the corrosive environment is provided by thermocouple measurement of temperatures of the test and reference elements and compen- sating the corrosion signal in accordance with the directly measured short term temperature difference of the elements.

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