Abstract: For the indirect measurement of the distribution of the anode currents in electrolytic cells operated with alkali metal chloride according to the amalgam process the cell voltage is determined without unnecessary ohmic connections between the current carrying elements of the cells and other conductive elements thereof.

Abstract: Equipment for controlling, monitoring, determining the most effective operating conditions and operating, and for displaying data in, alkali metal chloride electrolysis plants which are operated by the amalgam process, wherein the equipment has, for each electrolytic cell or for each group of electrolytic cells, a data collecting and processing device for controlling, monitoring and determining the most effective operating conditions the electrolytic cell or group, and all the data collecting and processing devices are connected to a central data collecting and processing device for central operation and for displaying data.

Abstract: Direct currents and alternating currents superposed upon same are measured by embracing the current conveying conductor with a prong-type meter. The jaws of the prong are provided with guide means for the current conveying conductor and with induction coils concentrically disposed with respect to the recess defined by the jaws. The prong is further provided with an electronic amplifier unit comprising an integrator for direct current, an amplifier, a filter and a rectifier for alternating current as well as means to display the measuring values. According to a special embodiment at least one jaw of the prong carries a thermometer projecting into the recess.