Electrical resistance corrosion probe

Details Electrical resistance corrosion probe Electrical resistance corrosion probe

1980-03-14

1982-04-20

Tokar, Michael J.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Erosion

324 65CR, G01N 2700

Patent

active

043261647

ABSTRACT:
An electrical resistance corrosion monitoring probe having a single lateral face of each of two rectangular prismatic elements of similar temperature-resistance characteristics but different thicknesses exposed to the corroding environment. Both the faces are corroded away, but the resistance change is different due to the inverse relationship between resistance and cross-sectional area. A measurement bridge network is used to monitor the change in cross-sectional area of both elements. A preferred probe embodiment, employing resistance elements having equivalent thermal masses and electrical resistances, as by using elements of the same material and of substantially equal lengths and cross-sectional areas, allows the use of a complementary measurement bridge network in its most sensitive region.

REFERENCES:
patent: 2851570 (1958-09-01), Schaschl
patent: 3104355 (1963-09-01), Holmes et al.
patent: 3286174 (1966-11-01), Schaschl
patent: 3857094 (1974-12-01), Caldecourt

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