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topic 5805

TestingRacks for Electrical Continuity


Does anyone have an easy and accurate way of checking plating rack electrical continuity? One suggestion I have tried is to use a multimeter set to read ohms and measure the resistance at each contact point on the rack. Another suggestion was to connect a rack to a battery charger [linked by editor to product info at Amazon] and measure the change in amps from one contact to another. Any suggestions?

Mark Parrish
- Springfield, Massachusetts


Hi Mark

At one time we had a machine called a spark tested that was used to look for pinholes in a rubber coated agitator. Basically it was a small rectifier with a wand attached. The agitator was grounded and the wand moved over the surface about 1" away. If there was a hole, sparks would shoot from the wand to the pinhole. I suspect these machines are still available from people who must do non-destructive testing. Otherwise the multimeter approach should work.

Don Piett
- Thompson,Mb, Canada

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