Leadership

ELECTROLYSIS —TROUBLES CAUSED THEREBY AND REMEDIES WHICH MAY BE APPLIED

Issue 15 and Volume 61.

ELECTROLYSIS —TROUBLES CAUSED THEREBY AND REMEDIES WHICH MAY BE APPLIED (Continued from page 187) The current survey consists of measurements of current flow on pipes at selected locations in the piping system. To determine the current flowing on a pipe, the voltage drop between two points on a continuous length of pipe is measured by means of a millivoltmeter. From this voltage drop and from the resistance of the included pipe, which may be obtained from published tables, the strength of the current is computed. To measure this drop it is necessary to expose the pipe and to make good electrical contact between the millivoltmeter leads and the pipe. The best contact for these current measurements is obtained by soldering the connecting wires directly to the pipe or to two brass plugs screwed into the pipe. This method is particularly advantageous when readings are to be taken over a considerable…

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