In the field of electronic measurement, some verification cannot meet the required conditions of JJG5392015 at the scene of the special environment. In order to better meet the requirements of dissemination, completes a engine of metrological security work. Combined with the actual situation of the scene, studies a set of metering scheme aiming at this kind of electronic scale. There are security, accuracy of the zero, in addition to the skin of accuracy, weighing accuracy and repeatability measurement method of the project such as design included in the plan. This method is introduced into measurement uncertainty evaluation. The results show that the measurement scheme can solve the field calibration of electronic balance problems, as to meet the requirements of a engine flow metering security tasks.