【摘要】 主要研究的内容是将变频调速器应用于标准流量检定装置 ,用它取代了水塔进行稳压稳流和调节流量 ,使标准量检定装置的流量稳定度和其不确定度均达到检定规程的要求。更多还原

【Abstract】 The article focuses on applying frequency conversion instrument to the device of checking rate of flow. The technique will replace adjusting rate of flow by water tower and will achieve the requirement of checking regulations about steadiness of flow and uncertainty.更多还原