1 First of all, we need to prepare a Phillips screwdriver and a two-wire or three-wire plug power cord;

2. Loosen the screw on the hexagonal column behind the instrument until it can be put into the threaded end of the electrode of the online PH detector; Insert a white transparent wire between the screw head and the hexagonal column in the electrode wire of the online PH detector, and tighten the screw head;

3. Loosen the left screw of GND grounding mark, insert the black electrode wire of online PH detector under the square gasket, and then tighten the screw;

4. Connect the two temperature electrode wires of yellow and red eyes to the wiring screws corresponding to Temp (there is something wrong with these two wires);

5. At this time, the connection between the electrode and the instrument is completed, and the power cord is connected below;

6. See that 220V and 0V are written on the back of the instrument. Connect the two wires of the power cord to 220V and 0V respectively. These two wires are out of order.