水表

水表检定装置又称之为水表试验装置或水表校验台，主要用于水表的检定、校验，是一种专对水表进行量值传递和性能测试的计量检测设备。水表检定装置的主要由供水系统、标准器（一般为工作量器）、试验管段、夹表器、瞬时流量指示计、始动流量测试装置、压力试验装置、夹表器换向器（大口径水表装置配置）等几部分所组成。将被检水表装夹到水表检定装置测量的位置上，启动循环水系统，使水流经被检水表和流量工作标准，同步操作被检水表和流量工作标准，比较两者的输出流量值，从而确定被检流量计的计量准确度和重复性。

Water meter verification device, also referred to as water meter test device or water meter calibration bench, is a piece of specialized metrological testing equipment dedicated to the verification and calibration of water meters, and it is primarily used for metrological value transfer and performance testing of water meters. This device mainly consists of the water supply system, standard measuring instruments (usually working volumeters), test pipe sections, meter clamps, instantaneous flow indicator, starting flow test device, pressure test device, and meter clamp commutator (configured for large-diameter water meter verification devices). To perform testing, the water meter to be verified is clamped onto the measuring position of the device, the circulating water system is activated to allow water to flow through both the tested water meter and the working flow standard, the tested water meter and the working flow standard are operated synchronously, and their output flow values are compared to determine the metrological accuracy and repeatability of the tested water meter.