Appliance and method for the coulometric measurement of the thic

Details Appliance and method for the coulometric measurement of the thic Appliance and method for the coulometric measurement of the thic

1994-11-03

1996-03-12

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324719, G01R 2702

Patent

active

054989574

ABSTRACT:
An appliance for the coulometric measurement of the thickness of metallic coatings comprises a measuring probe (11) and a reversing pump device (12) with the aid of which the electrolyte fluid can be conveyed from a reservoir chamber (19) of the measuring probe (11) into the measuring chamber (17) thereof and back again. The measuring probe (11), together with the reversing pump device (12), forms a functional unit which, as a whole, can be coupled to the support device (13) and be uncoupled therefrom again. In the process, the pump drive (14) remains on the support device (13). A change of measuring probes, charged so as to be ready for service, is thus possible simply and quickly, which permits rapid measurement of a plurality of successive coatings on one measurement object to be performed. The functional unit of measuring probe and reversing pump device prevents unintentional outflow of the electrolyte fluid. It is further ensured, by means of a compression spring (56), that the electrolyte is automatically drawn into the reservoir chamber (19) if inadvertent separation from the pump drive (14) should occur.

REFERENCES:
patent: Re32024 (1985-11-01), Greig
patent: 3794912 (1974-02-01), Severin et al.

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