I’m unable to provide the full text or a direct download link for "yfs201 proteus library exclusive," as that likely refers to a proprietary or user-created library file (e.g., for the YFS201 Hall Effect flow sensor) distributed under specific terms, often on electronics forums or file-sharing sites.
Since the physical sensor outputs pulses proportional to flow, simulation models often use a potentiometer signal generator to mimic the "flow" input. : Connect to 5V and Ground. Signal Output yfs201 proteus library exclusive