Turbidity by Laser Diode (Nephelometric)
The turbidity module is based on a high stability laser diode to reach low level of detection as required for drinking water. The automatic cleaning system allows to perform an auto-zero once per day to guaranty the absence of drift on long term. It avoid also the accumulation of sediments that may perturb the measurement. The laser diode could be either a red visible model to ease the maintenance and troubleshooting, or a infra-red model to follow the ISO 7027 nephelometric method at 860 nm.