The electronic crane scale verification verification is a procedure for ascertaining and confirming whether the measuring instruments meet the statutory requirements. Verification is a way of tracing traceability of value. The scope of verification mainly refers to the measurement instruments that are mandatory in the “Catalogue of Measurement Instruments Managed by the Chinese People’s Labor and the State”.

The verification must be based on metrological verification procedures.

The verification must give a determination as to whether the measuring instrument is qualified or not.

The verification shall be carried out according to the period specified by the metrological verification regulations.

When verifying the electronic crane scale, we shall verify the electronic crane scale according to the national metrological verification procedures of the People's Republic of China. The electronic scale calibration procedure is as follows:

First, the appearance of the inspection According to the People's Republic of China national metrological verification requirements of the appearance of the electronic hanging scales for visual inspection, freight vehicles illegal overload transport will be _102, meet the requirements of qualified, otherwise unqualified.

Second, before the metrological performance verification measurement performance test, 10 tons of electronic crane scale, should predict the load to the maximum capacity or maximum safety load.

1. Zero point test 1) Scales that do not have a zero point tracking device or autozero are first placed in the zero position, and then the measured value is changed to zero and is equal to the standard weight (0.1e) added to the previous scale value. Sum, and calculate the zero error according to the error formula.

2) The scale with zero tracking and automatic zero-setting device first adjusts the indication to be outside the range of automatic zero-setting and zero-tracking, for example, adding and loading 10 e weights, and then finding the flicker point, and calculating according to the zero-point error formula. Zero point error, application direction of the pressure sensor _155. Zero error requirement is less than 0.25e

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