A turbidity probe works by sending a light beam into the water to be tested. ... A light detector is placed at (usually) a 90 degree angle to the light source, and detects the amount of light that is reflected back at it. The amount of light reflected is used to determine the particle density within the water.

What is turbidity sensor?

Turbidity sensors measure the amount of light that is scattered by the suspended solids in water. ... Turbidity sensors are used in river and stream gaging, wastewater and effluent measurements, control instrumentation for settling ponds, sediment transport research, and laboratory measurements.

How does Arduino turbidity sensor work?

The gravity arduino turbidity sensor detects water quality by measuring the levels of turbidity, or the opaqueness. It uses light to detect suspended particles in water by measuring the light transmittance and scattering rate, which changes with the amount of total suspended solids (TSS) in water.