DWA Industry Guide Watermanagement, Wastewater-Waste

9.1.8 Flow meters, water quantity measurement equipment

9.1.12 Level meters, level regulation equipment

9.1.44 Sludge level meters

9.1.50 Separation layer measurement equipment

9.1.53 Water level meters

9.2.6 Process control technology systems

14.1.2 Self-monitoring

14.2.2 flow measurement/discharge measurement