Multi-Point Optical Level Sensors D2LS are used to maintain safe levels, automatically control liquids, warn of alarm
conditions, it controls the filling of all types of vessels from small to large tanks. These multi-point level sensor are
typically mounted into the top or bottom of tank .
D2LS relies on two basic scientific principles: refraction and reflection. When the detected liquid level is in the
presence of water, the light entering the probe changes due to the refraction of the water, thereby detecting the presence ofwater.
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