# Z05 Scale Factor

### Definition

This function calibrates the flow meter’s accuracy. If the displayed flow differs systematically from a reference value, the user can set a scale factor to automatically correct the output.

**Usage:**

* The measured flow is multiplied by a fixed factor KKK.
* Range: **+0.001 to +1000**, default **+1.0**.
* Execution automatically updates **K03 (Scale Factor)**.

**Example:**

Final Flow=Measured Flow×K\text{Final Flow} = \text{Measured Flow} \times KFinal Flow=Measured Flow×K

If actual flow = 101.5 L but meter shows 100 L, set K=1.015K = 1.015K=1.015.

{% hint style="info" %}
Z-series parameters currently **do not support Modbus read/write**.
{% endhint %}

### Notes

1. Z05 cannot accept negative values.
2. To measure reverse flow, enable **A17 Neg Flow (Reverse Flow)**.
3. **K03** serves the same function as **Z05**; users may choose either. Executing this function will automatically update the **Z05 Scale Factor** setting.
4. (Z-series parameters are for quick setup, consolidating multiple essential settings to simplify installation.)

### Operation Procedure

```
Z05 Scale Factor Setting Steps
• From the main screen(green backlight),
press Orange Button(Setup) to enter settings (orange backlight).
• Use Gray Arrow Buttons to select Z. Easy Setup , press Orange Button(Enter).
• Use Gray Arrow Buttons to select Z05 Scale Factor, press Orange Button(Enter).
• Use Gray Arrow Buttons to choose the digit to adjust(highlighted in dark gray).
• Press Orange Button(Edit) to enter adjustment mode.
• Adjust digits: Left Gray Button to increase, Right Gray Button to decrease.
• Press Orange Button(Set) to confirm each digit; repeat for other digits as needed.
• After all digits are set, press Blue Button(Save).
• Confirm by pressing Orange Button(Save) (or Blue Button(NOT) to cancel).
• Press Blue Button(ESC) to return to the main screen(green backlight).
```

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