ABB 4690 User Manual page 6

4690 Series
Turbidity systems
Sample Outlet
Flow Chamber
Inlet/Isolating
Valve
With Optional wiper unit
Fig. 2.2 Turbidity Sensors – Main Components
4
Sample Outlet
Wiper Unit
Optical
Emitter Flow Chamber
Optical
Receiver
Inlet/Isolating
Drain
Valve
Wiper Plug
Valve
Drain
Valve
Without Optional wiper unit
2 Turbidity Systems
Optical
Emitter
Optical
Receiver
IM/4690–EN Rev. A