Browse Prior Art Database

Portable Resistance Gage

IP.com Disclosure Number: IPCOM000082516D
Original Publication Date: 1974-Dec-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Anderson, CW: AUTHOR [+3]

Abstract

The conductivity of electromagnetic compatibility (ECM) coatings may be tested at the manufacturing or assembly site without laboratory instrumentation. A hand-held force gage 2 is provided with a gold probe 3. The dial graduations 4 are representative of the force exerted by probe 3 in an axial direction. An ohmmeter 5 has one lead 6 soldered to probe 3 and the other lead 7 secured to the part 8 which is under test.

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Portable Resistance Gage

The conductivity of electromagnetic compatibility (ECM) coatings may be tested at the manufacturing or assembly site without laboratory instrumentation. A hand-held force gage 2 is provided with a gold probe 3. The dial graduations 4 are representative of the force exerted by probe 3 in an axial direction. An ohmmeter 5 has one lead 6 soldered to probe 3 and the other lead 7 secured to the part 8 which is under test.

By maintaining the axial end of probe 3 in contact with part surface 9, using a predetermined standard force such as 100 grams, the resistance of the coating may be measured to determine whether the resistance is below the maximum value permitted by the established standard.

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