1 pH und Cl injection point

2 Chemical containers (acids und chlorine)

3 Electrical earthing. (Optional)

4 Sample water line inlet
   (between circulation pump outlet and filter)

5A Sample water outlet (back into the main stream)
     (before the entrance of the circulation pump)

5B Sample water outlet
     (If 5A is not possible)

6 Pool switch box

7 230Vac power supply

8 PT100, temperature probe (Optional)

9 pH probe holder

10 Rx probe holder

11 Buffer solution storage