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第一台完全由我国自行设计、制造的活塞式流量校验装置(又称:小型体积管等)已在开封仪表厂研制成功,并已于今年4月份通过国家技术监督局主持和组织的鉴定会。它是一种完全新型的流量标准装置,主要用来在线或离线检定液体流量计的准确度
The first completely self-designed by our country, the manufacture of piston flow calibration device (also known as: small volume tube, etc.) has been successfully developed Kaifeng Instrument Factory, and in April this year, through the State Bureau of Technical Supervision and Organization Identification meeting. It is a completely new type of flow standard device that is used primarily to verify the accuracy of liquid meters online or offline