The reduction of water consumption and the technical developments of the last decades, such as the use of tap aerators, water-saving appliances or the use of electronic measuring principles for water consumption measurements at household level, lead to increased and novel demands on flow metering technology. Nowadays, the meters used must be able to detect less water volume with a constant meter size and constantly changing flows. This makes it necessary.

to check whether the demanded measurement accuracy is maintained under these changed boundary conditions. Against this background, the question arises to what extent the existing test regimes to assess the measuring performance of water meters are still appropriate. In order to answer this question, it is necessary to set up a metrological infrastructure that will enable water meters to be tested close to real-world operation conditions. Therefore, the following paper focusses on flow dynamics within the water consumption at the household level. One key factor to realize a representative test regime are reliable and representative water consumption measurements at household level. Within the “Metrology for real-world domestic water metering” project (MetroWaMet) within the European Metrology Programme for Innovation and Research (EMPIR) water consumption measurements were carried out in different European countries. Based on the water consumption measurements discussed essential consumption characteristics can be derived in terms of amplitudes and amplitude distributions, gradients or durations. One important outcome of the study is that water consumption in the four different European countries is comparable. This means based on the available consumption data a generally applicable test regime can be derived which can be extended if necessary. The guide developed regarding the planning and carrying out of consumption measurements can be used to collect further reliable and representative consumption data.

用水量的减少和近几十年来的技术发展，例如使用自来水曝气机，节水设备或使用电子测量原理进行家庭用水量测量，导致对流量计量的需求增加且新颖技术。如今，所使用的水表必须能够在水表尺寸恒定且流量不断变化的情况下，检测到更少的水量。这使得有必要。

检查在这些变化的边界条件下是否保持了所需的测量精度。在这种背景下，出现了一个问题，即现有的用于评估水表测量性能的测试制度在多大程度上仍然适用。为了回答这个问题，有必要建立一个计量基础设施，以使水表能够在接近实际操作条件的情况下进行测试。因此，以下论文重点关注家庭用水量内的水流动态。实现代表性测试方案的一个关键因素是在家庭水平上进行可靠且具有代表性的用水量测量。在欧洲创新与研究计量计划（EMPIR）的“现实生活中的水计量计量”项目（MetroWaMet）中，在不同的欧洲国家进行了耗水量测量。基于所讨论的耗水量测量，可以根据幅度和幅度分布，梯度或持续时间得出基本的耗水量特征。该研究的重要成果之一是，四个不同的欧洲国家的用水量具有可比性。这意味着基于可用的消耗数据，可以得出普遍适用的测试方案，必要时可以扩展该测试方案。有关计划和执行消耗量测量而制定的指南可用于收集进一步的可靠且有代表性的消耗量数据。