​First verification and in-use inspection of electronic floor scales

First verification and in-use inspection of electronic floor scales
The first verification and the inspection in use are the important stage of the control of the electronic floor scale, which plays an important role in promoting the use of the electronic floor scale. The first verification and the inspection method in use of the electronic floor scale are clarified, only for the reference of relevant personnel.

Electronic floor scales are mainly composed of load-bearing system, force transfer conversion system and indicator system. According to their structural principles, they can be divided into three categories: mechanical floor scales, electronic floor scales and electromechanical floor scales. Electronic floor scales have been widely used in China's industry, agriculture, commerce and medical and health sectors. Therefore, the performance and quality of electronic floor scales have an important impact on the social operation. In this case, it is of certain importance to strengthen the first verification and use inspection of electronic floor scales.

1. First verification of electronic floor scale

So-called first verification is refers to has not accepted the test of the new verification platform balances for operation, in order to ensure the quality of the electronic floor scale satisfy actual application demands of various fields, and the verification and performance for the measurement of the new scale load test, ensure it meet the requirements of related department approval form, to ensure that meet the practical application of prices. If the electronic floor scale is proved qualified for the first time, the relevant department of the state shall issue a convincing verification certificate, affix the official seal of the relevant department and the qualified seal, and clearly and accurately indicate the date and time of the first verification. The relevant authorities shall issue an accurate notification of the result of the first unqualified verification of the floor scale, and shall not permit the delivery, sale and use of the floor scale, so as to maintain the stable operation of the society as a whole.

2. Subsequent verification of electronic floor scales

The so-called subsequent verification is any verification after the first verification of the electronic floor scale, which can be the verification before the use of the newly put into use compulsory verification of measuring instruments, the verification after mandatory periodic verification or repair, or the verification within the validity period of periodic verification. The smooth progress of subsequent verification can ensure that the actual performance of the floor scale after use within the validity period can meet the relevant requirements, so as to promote the effective play of the actual application value of the floor scale. Just meet the actual situation of subsequent verification, certain differences with the verification of the requirements for the first time, weighing test can be clear, combining the actual usage of floor scale but not less than two-thirds of the biggest weighing, and the repeatability test requirement is not as strict as verification for the first time, can only about 50% of the biggest weighing test, on the basis of general follow-up verification work within a reasonable range of error control.

Floor scale follow-up verification shall be used in quality verification work and meet performance, on the basis of the rational use of manpower resources, lightens the metrological verification personnel work quota and the intensity of labor, to improve the quality and efficiency of scale load verification work, promote scale load in different industries in the field of practical application value. For the weighing scales that are reasonable after the subsequent verification, the relevant departments should issue the standard appraisal certificate, affix the official seal of the relevant departments or paste the qualification certificate, and mark the date and time of the subsequent verification accurately, so as to provide effective data support for the smooth progress of the subsequent verification. For the weighing scales that fail the subsequent verification, the relevant departments shall issue a notice of the verification results and prohibit the use of the weighing scales.