Meter checking instrument

The invention relates to a meter checking instrument which comprises a virtual load module and a field calibration module. One end of the virtual load module is connected with an electric energy meter, one end of the field calibration module is connected with the electric energy meter, and the virtual load module is used for inputting virtual load current to the electric energy meter to enable the current of the electric energy meter to meet preset conditions, so that the field calibration module can calibrate the electric energy meter. Field calibration work of the electric energy meter under the condition of low power consumption load or no load of a user is met, and the problem of field calibration of the electric energy meter when a new user has no power consumption load or has low power consumption load is solved. 本申请涉及一种验表仪，包括：虚负荷模块及现场校验模块；所述虚负荷模块的一端连接电能表，且所述现场校验模块的一端连接所述电能表，所述虚负荷模块用于向电能表输入虚负荷电流使得电能表的电流满足预设条件，从而使现场校验模块能够校验所述电能表。满足用户用电负荷低或无负荷情况下，电能表的现场校验工作，解决了新上用户无用电负荷或用电负荷低时现场校验电表的问题。