STACSENSE PROBE UV OPTICAL TECHNOLOGY FOR OPTIMAL MEASUREMENTS • V 254 spectral absorption without any reagents or consumables. U • ulti-parameter measurement: SAC254, CODeq, TOCeq & BODeq, M Turbidity eq • odbus RS-485 digital communication. M • utomatic Turbidity compensation. A SCOPE • rban wastewater treatment: detecting organic load variations during input / treatment process / U output. • reatment of industrial effluents T • urface water monitoring S • ish farming, aquaculture (freshwater) F • rinking water: monitoring Organic matter in raw water, oxidation process, coagulation, D activated carbon filtration. The Spectral Absorption Coefficient (SAC) at 254 nm helps determine the Organic Content of a water sample but also the COD, TOC and BOD parameters by applying the appropriate correlation coefficients. MEASUREMENT PRINCIPLE The StacSense probe uses UV absorption at 254 nm to measure organic compounds dissolved in water. This absorbance is correlated with the concentration of TOC, COD and BOD to provide a high-performance probe requiring no consumables. A reference measurement at 530 nm is used to compensate for the presence of particles in the sample that also absorb UV light and to establish the Turbidity parameter. The use of a state-of-the-art high-performance UV LED, combined with rigorous ignition management, offers an optimal variance

The StacSense sensor connects to any type of recorder, transmitter, remote management system or PLC using a Modbus RS-485 input. As a result of sensor indexing, more than 200 sensors can be connected to a recorder. Interference-proofing: pre-amplification built into the sensor and digital signal processing. All calibration, history, user and measurement data are processed directly in the StacSense Probe and transmitted by a Modbus RS-485 or SDI-12 link. TECHNICAL CHARACTERISTICS

TECHNICAL CHARACTERISTICS Performance levels obtained under laboratory conditions (controlled temperature and stirring, aqueous solutions of KHP) * Optical path 2 and 50mm, Linearity: > 0.99 on the given range. ** Highest value ELECTRICAL CONNECTIONS (6 GREEN / YELLOW : CABLE SHIELD Cable lenght 15 to 100 meters [n RED, PURPLE, YELLOW, ORANGE, PINK : POWER SUPPLY V+ [2) BLUE : SDI-12 [3 BLACK : WEIGHT (6 GREEN / YELLOW : CABLE SHIELD PONSEL BYAQUALABO