SMPTE Technical Note: Automatic Control of Silver Recovery

Abstract

This article describes a device for automatic silver recovery designed by the author. The SilverController continuously measures the silver concentration in the fixed bath and automatically provides three levels of control. In addition to adjusting the current density or the number of cells in operation automatically, the controller provides a digital display of the silver concentration in grams/liter. Also discussed are the use of a differential silver sensor system, a reference solution, and the operation and internal functions of the controller.

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