Afriso South Africa (Pty) Ltd
Conductivity alarm unit - CoFox® ELT 500/4
Designed for use with electrically conducting liquids which do not foam excessively and are not highly viscous or adhesive (bridging), e.g. water, emulsions or waste water. The CoFox® ELT 500/4 alarm unit is suitable for use in large installations. Several zones (also large areas) can be monitored simultaneously with electrodes (probes) at various points.
The CoFox® ELT 500/4 level controller operates on the basis of conductivity. The electrodes connected to the switching unit monitor the status at several points. When one or several electrodes are bridged, the red LED of the corresponding electrode circuit is switched on. For fast and precise location of the leak, a label is provided for each LED. A common voltagefree relay contact can be used to control separate alarm devices (e.g. alarm light or horn). The described function is only activated by electrode signals which are longer than 1 second in duration. The alarm is saved and cannot be reset for the duration of the electrode signal.
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