Digital turbidity meter is a device used to measure the clarity of a liquid by determining the amount of suspended particles in the liquid. It works by shining light through a sample of the liquid and measuring the amount of light scattered by the particles in the liquid. The amount of light scattered is directly proportional to the concentration of particles in the liquid, which is then displayed on a digital readout. Digital turbidity meters are commonly used in water treatment plants, breweries, and other industries where the clarity of a liquid is important.