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Ode

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About Ode

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  1. Hey folks, This is my first post here, so allow me to introduce myself: My name is Ovidiu, and I am a faculty member at Pitt Bradford. Part of my teachings here are marginally related to process automation. One of my students is thinking of making an automated water changing system to take care of a fish tank. The idea: Use an automated system to change a set volume of water from a fish tank, on a time cycle. The city water will be stored in a holding tank (to allow for chlorine to dissipate), from where should be pumped into the fish tank once every 10 days. Before pumping fresh water into the tank, the system should drain a set volume of dirty water from the fish tank. The tools: · Unitronics 10 in panel, with a UIS-WCB1 I/O module · Two multi-level liquid level switches (one for each tank) · Two 24V submersible water pumps · One 24V 3-way solenoid valve · One 24V 2-way solenoid valve The process: 1. Open fish tank solenoid valve 2. Turn on fish tank pump (drain dirty water) 3. Fish tank low-level switch turns off the fish tank pump 4. Reverse solenoid valve 5. Turn on holding tank pump (fills fish tank with clean water) 6. Fish tank high-level switch turns off the holding tank pump 7. Holding tank low-level switch turns on the city water solenoid valve 8. Holding tank high-level switch turns off the city water solenoid valve 9. Repeat process every ten days Proposed Diagram I need help from you to learn how to make this setup work (hardware and software), so I can guide the student through the process. Any help will be greatly appreciated - let us start with the wiring of the equipment. Thank you, Ovidiu
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