 Activated sludge tank: 

o Conductivity and temperature 

o Oxygen meter , 2 pcs./1 basin 

o ORP meter, 2 pc./ 1 basin 

o NO$_{3}$ analyzer, 1pc. / basin 

o Air flow meter for air pipes, installed within the common supply pipes of the individual basins. 

o Pressure gauges, installed within the common supply pipes of the individual basins. 

 Return and Excess PS: 

o Ultrasonic or radar level measurement at the pump sump 

o Magnetic Inductive Flow measurement for return sludge pressure line 

o Magnetic Inductive Flow measurement for excess sludge pressure line 

o Pressure gauges, installed within the common supply pipes of the individual basins. 

o Safety measurements for Methane (CH$_{4}$) and Hydrogen sulphide (H$_{2}$S) with acoustical and optical alarm at the pumping station room 

 Primary sludge: 

o Magnetic Inductive Flow measurement for all sludge line 

o Safety measurements for Methane (CH$_{4}$) and Hydrogen sulphide (H$_{2}$S) with acoustical and optical alarm at the pumping station room 

 Mechanical Thickener: 

o Magnetic Inductive Flow measurement in the thickener feeding line for each thickener 

o Magnetic Inductive Flow measurement in the polyelectrolyte dosing line for each thickener 

o Service water flow measurement for each thickener 

o Magnetic Inductive Flow measurement in the thickened sludge pump discharge line for each pump. 

 Anaerobic sludge digestion: 

o Capacitive/radio detection water level measurement for each digester 

o Temperature measurement at three different levels of inside of the digester 

o Temperature measurement for suction and pressure pipes of the recirculation pipework (with transmitter and with displays) 

o Temperature measurement for feeding pipes(with transmitter and with displays) 

o Temperature measurement at heat exchanger, hot water supply inlet/outlet(with transmitter and with displays) 

o Temperature measurement at heat exchanger, sludge inlet/outlet(with transmitter and with displays) 

o pH measurement for pressure pipes of the recirculation pipework 

o Magnetic inductive flow measurement in the recirculation suction pipes 

o Pressure gauges , installed within the pressure pipes 

