# A07 Pipe Inner Diameter

### Definition

Set the pipe inner diameter. Default values vary depending on the selected pipe unit.

<table data-full-width="true"><thead><tr><th>管路外徑</th><th>DN15</th><th>DN20</th><th>DN25</th><th>DN32</th></tr></thead><tbody><tr><td><p>預設值</p><p>mm</p></td><td>16.6</td><td>20.9</td><td>25.6</td><td>31.6</td></tr><tr><td>inch</td><td>0.654</td><td>0.811</td><td>1.008</td><td>1.244</td></tr><tr><td><p>最小值</p><p>mm</p></td><td>5</td><td>7</td><td>12</td><td>18</td></tr><tr><td>inch</td><td>0.197</td><td>0.276</td><td>0.472</td><td>0.709</td></tr><tr><td><p>最大值</p><p>mm</p></td><td>29</td><td>33.4</td><td>41</td><td>51</td></tr><tr><td>inch</td><td>1.142</td><td>1.315</td><td>1.614</td><td>2.008</td></tr></tbody></table>

<table data-full-width="true"><thead><tr><th>管路外徑</th><th>DN40</th><th>DN50</th><th>DN65</th><th>DN75</th></tr></thead><tbody><tr><td><p>預設值</p><p>mm</p></td><td>40.6</td><td>51.8</td><td>67.8</td><td>78.2</td></tr><tr><td>inch</td><td>1.598</td><td>2.039</td><td>2.669</td><td>3.079</td></tr><tr><td><p>最小值</p><p>mm</p></td><td>23</td><td>30</td><td>38</td><td>46</td></tr><tr><td>inch</td><td>0.906</td><td>1.181</td><td>1.496</td><td>1.811</td></tr><tr><td><p>最大值</p><p>mm</p></td><td>63</td><td>76</td><td>89.2</td><td>117</td></tr><tr><td>inch</td><td>2.48</td><td>2.992</td><td>3.512</td><td>4.606</td></tr></tbody></table>

### Notes

1. Pipe size units are determined by **B06 (Pipe Size Unit)**.
2. <mark style="color:red;">Each time the pipe size is changed, please re-execute</mark> <mark style="color:red;"></mark><mark style="color:red;">**Z03 Auto Initialize**</mark> <mark style="color:red;"></mark><mark style="color:red;">and</mark> <mark style="color:red;"></mark><mark style="color:red;">**Z04 Auto Zero Offset**</mark> <mark style="color:red;"></mark><mark style="color:red;">to improve measurement accuracy and ensure stable product performance.</mark>
3. On certain firmware versions, a pipe material confirmation page will appear after setting **A07 Pipe Wall Thickness**. Please select the matching pipe material or choose **Custom**. If a predefined pipe material is selected, **A08 (Pipe Material)** will be synchronized automatically.

### Operation Procedure

<details>

<summary><strong>Button Functions</strong> <em>(Click to Expand)</em></summary>

When the main screen is displayed in **green backlight**, the four buttons function as follows:

* <img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FRnX1fMK1ja5FUx043ZYc%2Fimage?alt=media&#x26;token=f31dd577-ba27-4369-af8b-25ce9afcd1f9" alt="" data-size="line"> **Blue Button (leftmost):** Return, exit, or save settings.
* Gray Direction Buttons:
  * <img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FR48KXgI2flteQ78PYH8a%2Fimage?alt=media&#x26;token=b5b4ab82-6f88-44c6-8b85-181c7bde6fe9" alt="" data-size="line"> **Left Gray:** Previous Page, decrease value, or select item
  * <img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FVWLxHCjTZgj8Y3CXUn6X%2Fimage?alt=media&#x26;token=35556f59-f963-4b03-8db1-34f2953ddb58" alt="" data-size="line"> **Right Gray:** Next Page, increase value, or select item
* <img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2F0lsHAW4cWIphk6mKtEoK%2Fbutton-orange.png?alt=media&#x26;token=9168c231-821c-4895-9194-0cf61b2fd06a" alt="" data-size="line"> **Orange Button (rightmost):** Rightmost button: Enter settings, edit, or confirm selection

{% hint style="danger" %}
**Do not hold buttons for extended periods to avoid damage.**
{% endhint %}

{% hint style="info" %}
Button functions may change depending on the operation context to improve usability or prevent accidental presses.
{% endhint %}

</details>

```
A07 Pipe Inner Diameter Setting Steps
• From the main screen(green backlight), 
  press Orange Button(Setup) to enter settings (orange backlight).
• Use Gray Arrow Buttons to select A. Measurement, press Orange Button(Enter).
• Use Gray Arrow Buttons to select A07 Pipe Inner Diameter, 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).
• On certain versions, a “Pipe Material Confirmation” screen will be displayed.
• Use the gray arrow keys to select the matching pipe material or Custom, 
  then press the orange Set key to confirm.
• Press Blue Button(ESC) to return to the main screen(green backlight).
```

<figure><img src="https://4028902321-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSBz5Tlpy8GCIkK4ygkgZ%2Fuploads%2FPhY3VCTNJysO3mH6WUJp%2Ffu-es-A07-en.png?alt=media&#x26;token=351dbad0-d195-4b17-8bd7-dbcd15263d43" alt="" width="563"><figcaption></figcaption></figure>

## A07 Options, RS485 Values, Read/Write Commands, and Formats

| Refer to the table above | Refer to the table above | Refer to the table above |
| ------------------------ | ------------------------ | ------------------------ |
| Custom                   | Refer to the table above | -                        |
| Minimum                  |                          | -                        |
| Maximum                  |                          | -                        |

> Refer to the [Read/Write Memory List](https://docs.lorric.com/qr/fu-es-echosense-instruction-manual/communication/modbus-rtu-protocol/read-write-memory-ram/read-write-memory-read-list) for the Modbus command format. This parameter uses the float 32 data format.