The SludgeWatch 715 provides a simple, low cost method of spot checking the sludge blanket level in a wide variety of settlement tanks. The cable reel design removes the need for any additional carrying bag. The sludge blanket is detected by winding the sensor down into the tank, the audible tone will change and the LED illuminates once the sensor has reached the blanket.

This method of sludge blanket detection offers major improvements over traditional systems in terms of both repeatability and health and safety - no more handling tubes full of contaminated wastewater.