I'm a chemical engineer trying to be an electrical. I have a problem here with two automated valves feeding two tanks. I have been able to set them to switch when one tank is full and both open when both tanks are full. However I'm having trouble when they both empty at the same time. The logic requires one full and one empty for switching however in the off chance that both get emptied a valve needs to close. Can anyone suggest anything???
An Aussie Cheers
An Aussie Cheers