Sludge level gauge OPTISYS SLM 2100

optical

Optical sludge level measuring system for sedimentation profile measurement and continuous tracking of sludge blanket • Integrated electronics with 2 x 4…20 mA, 3 relays, limit switches • 3 measurement modes for profile, blanket and fluff levels as well as zone tracking • 0.1…30 g/l; max. 10 m / 32.8 ft • Optional automatic flush cleaning unit for low maintenance The OPTISYS SLM 2100 is a sludge level measuring system for measurement of sludge blanket level and fluff levels as well as sedimentation profiles. Using an optical sensor which travels right down to the tank bottom, it detects all sludge phases, supplying precise concentration and level measurements. In this way, it is also able to measure the sludge blanket continuously (zone tracking) and hence monitor one specific "zone" (e.g. for controlling the pumps during de-pumping of the sludge). Unlike with ultrasonic sludge level meters, there are no echo returns from tank walls or signal damping by fluff or floating sludge that can cause false measurements. Product highlights • Accurate and colour-independent measurement up to a depth of 10 m / 32.8 ft • By immersion of optical sensor (180° transmission of NIR-LED) • No interference with fluff or floating sludge • Built-in heater and ventilation for temperature regulation • Durable stainless steel sensor and instrument enclosure • IP54 enclosure and built-in heater for outdoor installations • Low maintenance due to (optional) automatic flushing of sensor and cable after each measuring cycle • Reliable signal transmission from sensor, due to digital communication via optocoupler • Common operating and service concept with KROHNE flow and level devices (GDC)