The following is a mixing tank. There are three sensors to measure the temperature (sensor T), the level of the liquid inside the tank (sensor L), and a timer to measure the mixing time (M). All sensors are binary status. It means that the out put of these sensors are as follows:

If temperature is 60^oC, the output of temperature sensor is 5V, otherwise is zero volt.

If the level in the tank is 150 cm, the output of level sensor is 5V, otherwise is zero volt.

After 10 min mixing, the output of timer is 5V, otherwise is zero volt.

The valve F will open when at least two sensors output is 5 volts.

By opening valve F, the tank is evacuated, then valve F is closed, and all sensors reset to zero. (5 Marks)