Metrology serves as the "eyes" of industrial production. Flow measurement is an integral part of metrological science and technology, closely linked to the national economy, national defense, and scientific research. Effective flow measurement plays a crucial role in ensuring product quality, enhancing production efficiency, and advancing scientific and technological progress. This is particularly significant in the current era-characterized by energy crises and increasingly automated industrial production-where the importance and function of flow meters within the national economy have become even more pronounced.
The unit commonly used in engineering applications is m³/h. Flow measurements are categorized into instantaneous flow (flow rate) and cumulative flow (total flow). Instantaneous flow refers to the quantity of substance-whether gas, liquid, or solid-passing through the effective cross-section of a closed pipe or open channel per unit of time. Cumulative flow refers to the total quantity of fluid passing through the effective cross-section of a closed pipe or open channel over a specific time interval (such as a day, week, month, or year). Since cumulative flow can be derived by integrating instantaneous flow over time, instantaneous flow meters and cumulative flow meters are functionally interchangeable.
