Current Category: CN-JJG - National Metrology and Inspection Regulations JJG
本规程适用于分步式和直读式滚动落球黏度计的首次检定、后续检定和使用中检查。
本规程适用于锐线光源原子吸收分光光度计的首次检定、后续检定和使用中检查。
本规程适用于潮位(水位)测量范围(0~600) m以内的压力验潮仪(水位计)的首次检定、后续检定和使用中检查。
本检定系统表适用于直流电能计量器具的量值传递。
本检定系统表规定了直流电能计量基准的基本计量学参数以及将直流电能量值由计量基准通过计量标准传递到工作计量器具的传递关系、量值传递方法及量值传递时的测量能力。
This regulation applies to the initial verification, subsequent verification, and in-use inspection of on-board standard speed measuring devices for motor vehicles in road traffic and on-board standard speed measuring devices for locomotives in urban rail transit.
This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of combination (selected combination) weighing instruments.
This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of digital DC resistance testers used to measure the DC resistance of inductive loads.
This procedure is applicable to the initial verification, subsequent verification, and in-service inspection of AC resistors with a resistance range of 1 mΩ to 10 MΩ and a frequency range of 20 Hz to 1 MHz, as well as AC/DC resistors.
This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of solid-state voltage standards with a nominal output DC voltage of 10 V, 1018 V, 1 V, and 100 mV.
This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of grain density meters.
This regulation applies to the initial verification, subsequent verification, and in-service inspection of thermal gas meters (hereinafter referred to as gas meters) that measure natural gas as the medium, with a maximum working pressure not exceeding 50 kPa and a maximum flow rate not exceeding 160 m3/h, and that use heat transfer as the measurement principle.
This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of liquid volume flowmeters.