2.1 Principles of operation
No. Name No. Name
1 Fertilizers, acid, lye (alkali) or
other substances
9 Pressure pipe/filling pump
2 Dosing valve 10 EC
3 Venturi 11 Filling valve with overflow
protection
4 EC sensor 12 Mixing tank
5 pH sensor 13 System pump
6 Clean water 14 Filter
7 Drain water 15 Flow meter
8 Filter 16 Valve groups and valves in the
greenhouse