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| Three experiments can be performed on this module. 1) This is used to log liquid level (upper and lower level) of a liquid chamber. 2) To identify the presence of a metallic object within a range of 5mm from the transducer. 3) To detect the break in light incidence on the optical probe. The programs are written to identify the change in one of the parameters, and write a control program, to supervise and control external devices like relays, contactors etc based on the feedback status acquired from these three sensors. This module provides a means to demonstrate and understand how control systems are designed. |
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