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Personal projects / Sensors & electronics
Water-flow alarm
A small controller that monitors cooling-water flow and provides an alarm and relay connections.
Open the numbered review →Flow monitoring electronics
Photo 11
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Monitoring the cooling-water flowAn Arduino Nano reads flow meters for the furnace’s cooling-water circuits and provides an alarm output, along with output pins for an external relay. I built it to help check that water was circulating through the power transformers, chamber, and electrode holders, all of which needed cooling.