I am using this sensor (0.3-10L/min) with a Digiten DFC15 flow controller. Here's what you need to do.1. Swap the yellow and black wires on the sensor. (The yellow wire should be in the middle.) 2. Connect it to DFC15.3. I had to use a K-factor of 72.4 for my system. Note that this value is in gallons. If your unit of measurement is liters, the number will be different. I use mine to monitor my reverse osmosis system. The device is very sensitive and displays very small flow rates in great detail. Much luck.
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