Sludge measurement system survives extreme conditions
March 7, 2003
New sludge level monitoring system is designed for reliable sludge control, even in hostile environments. The system is used for sludge control in sewage plants, often in a plant''s primary settlement tank. The ultrasonic transducer unit, suspended in the supernatant, transmits an ultrasonic pulse, which is reflected off the sludge blanket. The time of flight of the echo determines the height of the blanket to an accuracy of ±25mm. Blanket level measurement and a graphical display of the sludge blanket can be displayed continuously on the control unit in the plant''s control room. MSL600.