# Z Easy Setup

<table><thead><tr><th width="79.0849609375">No.</th><th width="169.23046875">Name</th><th>Description</th></tr></thead><tbody><tr><td>No.</td><td>Name</td><td>Description</td></tr><tr><td>Z03</td><td>Auto Initialization</td><td><p>This function automatically detects the ultrasonic velocity of the fluid to be measured, helping the flow meter configure environmental parameters.</p><p><strong>Usage Timing:</strong> After mechanical installation, electrical installation, and parameter configuration.</p><p><strong>Operation:</strong> Press <strong>Start</strong> to begin execution. Once completed, the function will automatically update the <strong>A21 (Auto Initialization)</strong> setting.</p></td></tr><tr><td>Z04</td><td>Auto Zero Offset</td><td><p>This function recalibrates the flow meter’s zero point (0 flow), effectively resetting the output to zero. During ultra-low flow measurements, setting the zero point helps correct zero-flow offset errors and improves measurement accuracy.</p><p><strong>Operation:</strong> Press <strong>Start</strong> to begin execution. Upon completion, the function will automatically update the <strong>A22 (Automatic Zero Offset)</strong> setting.</p></td></tr><tr><td>Z05</td><td>Scale Factor</td><td><p>This function calibrates the flow meter’s measurement accuracy. When there is a systematic deviation between the displayed flow and the actual reference flow, the user can set a scale factor to automatically correct the output.</p><p><strong>Operation:</strong> The measured flow is multiplied by a fixed factor ranging from <strong>+0.001 to +1000</strong>, with a default of <strong>+1.0</strong>. Upon execution, this function automatically updates the <strong>K03 (Scale Factor)</strong> setting.</p></td></tr></tbody></table>