Robust and accurate sludge blanket detection

French sensor expert Aqualabo has launched a new variant of its Ponsel brand of digital sensors, the MES5, which allows users to measure the concentration of suspended solids (g/L) and turbidity (FAU) while also providing sludge blanket detection (in %).

The device is aimed at applications in urban and industrial wastewater treatment plants’ inlet/sewage water (suspended solids and  turbidity measurement), aeration basins (suspended solids), clarifiers (sludge blanket detection), outlets (turbidity), sludge treatment processes (centrifuge optimisation) and dredging sites (turbidity).
The measurement principle of the new MES5 numerical sensor is based on the mitigation of the infra-red signal (870 nm) through an optical path of 5mm using absorptiometry (measurement of the amount of radiation absorbed). For a higher level of precision, the optics of the sensor are regulated for temperature.
The Ponsel sensor incorporates features that are said to provide robust and accurate measurement. In contrast to where analogue sensors are used, there is no risk of losing data through a long cable. Aqualabo says it has made every effort to ensure the reliability of the transmitted measurements.
The MES5 also records all historical data to support the instrument’s traceability, and ongoing adjustments for sensor aging and calibration.
The new sensor can be used in combination with the firm’s Odeon range of handheld water quality intrumentation (pictured).