The instrument is made up of optoelectric senser and controller. When the water level reaches the control point, the senser will send out the trigger signals , which will cut off the power. A test is finished through this process.

Operations ( See the panel graphs):
1 Determine the installation places of the optoelectric senser in the two measuring cylinder.
2 Discharge all the water in the cylinder in one minute.
3 Turn on the power and the electromagnetic valves will boot up and the lights will turn on, if some valves remain idle, press the boot-up button again
4 the inlet valve for 100 liters and 50 liters is the same. So when you use the valve for 50 liters, close the 100 liters, vice versa.