Installation of turbidity sensor using coagulation process

Helo there.. I'm trying to install a turbidity sensor for coagulation process where the upper water level will read by the sensor but for the lower level the sensor will not read it. I'm planning to install the system sideways to acquire the result. (see attach photo). Thank you . Hoping to get a help for our school project.

Well, get started I'd say, and if there are any specific questions do ask your teacher or if s/he doesn't know feel free to post it here as well.