Electronic Crane Scale Verification Process

Electronic crane scale verification process

Verification is a process to find out and confirm whether a measuring instrument meets legal requirements. Verification is a method of value transfer traceability. The scope of verification mainly refers to the measuring instruments that are compulsory in the "Catalog of Measuring Instruments Managed by the Chinese People's Workers and the State According to Law". The verification must be based on the measurement verification procedures. Verification must give the judgment of whether the measuring instrument is qualified or not. The verification should be carried out according to the cycle specified in the metrological verification regulations. When we verify the electronic crane scale, we should verify the electronic crane scale according to the National Metrological Verification Regulation of the People's Republic of China. The verification process of the electronic crane scale is as follows:

1:Visual inspection

According to the appearance requirements of the National Metrological Verification Regulations of the People's Republic of China, the electronic crane scale is visually inspected. The freight truck will be suspended for illegal and overloaded transportation.

2:Measurement performance verification

Before the measurement performance verification, the electronic crane scale should predict the load to the maximum scale or the maximum safe load.

2.1 Zero point test

2.1.1 Scale without zero tracking device or automatic zero setting

First, put the hanger at the zero position, and then measure the total of the standard weight (0.1e) added by the previous division value when the indicated value becomes zero, and calculate the zero error according to the error formula.

2.1.2 Scale with zero tracking and automatic zero setting device

First, adjust the display value outside the range of automatic zero setting and zero tracking, such as adding a weight load of 10 e, then find the flicker point, and calculate the zero error according to the zero error formula. The application direction of the pressure sensor is 155. The zero point error is not more than 0.25e.

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