# 4.2 Unit（單位）

|                                          |                                                                                                                                                                                                                                                                                                                                                                                                  |
| ---------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| <p>量測單位 </p><p>Measurement Unit   </p>   | 切換公制（Metric）或英制（English）單位                                                                                                                                                                                                                                                                                                                                                                       |
| <p>流量分母單位(體積) </p><p>Flow Numerator</p>  | <p>1.「m³」：立方公尺 Cubic meter </p><p>2.「L」：公升 Liter =0.001*M³ </p><p>3.「gal」：美制加侖 USA gallon =3.785412*0.001M³ </p><p>4.「igl」：英制加侖 Imperial Gallon =4.54609*0.001M³ </p><p>5.「mgl」：十萬美制加侖 Million USA gallon =3785412*0.001M³ </p><p>6.「cf」：立方英尺 Cubic feet =28.3164847*0.001M³  </p><p>7.「bal」：USA liquid barrel =35.23907=35.23907*0.001M³ </p><p>8.「ob」：石油桶 Oil barrel =158.987295\*0.001M³ </p> |
| <p>流量分子單位(時間)</p><p>Flow Denominator</p> | <p></p><ol><li>sec：秒    2. min：分    3. hr：時    4. day：天</li></ol>                                                                                                                                                                                                                                                                                                                                |
| <p>累積流量顯示單位 </p><p>Totalizer Units</p>   | 與流量分母單位(體積)相同                                                                                                                                                                                                                                                                                                                                                                                    |
| <p>累積流量顯示位數 </p><p>Totalizer Decimal</p> | 最多有7位數，可設定改變小數點位置                                                                                                                                                                                                                                                                                                                                                                                |
| <p>淨累積流量開關 </p><p>Enable NET Total</p>   | 開啟或關閉淨累積流量（~~<mark style="color:orange;">注意！累積流量在大於4,000,000,000,000m³時會自動歸零）</mark>~~                                                                                                                                                                                                                                                                                                           |
| <p>正累積流量開關 </p><p>Enable POS Total</p>   | 開啟或關閉正累積流量\~\~<mark style="color:orange;">（注意！累積流量在大於4,000,000,000,000m³ 時會自動歸零)</mark>\~\~                                                                                                                                                                                                                                                                                                      |
| <p>負累積流量開關</p><p>Enable NEG Total</p>    | 開啟或關閉負累積流量（~~<mark style="color:orange;">注意！累積流量在大於4,000,000,000,000m³ 時會自動歸零)</mark>~~                                                                                                                                                                                                                                                                                                          |
| <p>流量歸零</p><p>Reset Totalizer</p>        | 能分別歸零淨、正、負累積流量,或同時全部歸零                                                                                                                                                                                                                                                                                                                                                                           |
| <p>溫度單位</p><p>Temperature Unit</p>       | <p>設定溫度單位: </p><p>1.degree C：攝氏 </p><p>2.degree F：華氏</p>                                                                                                                                                                                                                                                                                                                                         |


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