As we all know, the accuracy of measuring instruments directly affects the quality of production of enterprises, which plays a great role in the quality of enterprises. Therefore, the management of measuring instruments such as maintenance, maintenance and calibration is particularly important. The problem is that each enterprise has a large number of measuring instruments, and effective management is needed to ensure its quality. Especially in the manufacturing industry, even if it is a small and medium-sized factory, there are many measuring instruments (instruments and equipment), which can cost hundreds of thousands of pieces. Due to the long-term use of these equipment, it is necessary to carry out regular calibration, maintenance, maintenance and other work. But the number of instruments and equipment is quite large, especially in some large factories, the equipment is as much as a cow hair, how to manage, in order to ensure the normal operation of these instruments and equipment? Today I will introduce a classification -ABCD classification, as long as the master of ABCD classification, can be more scientific and efficient management of measuring instruments.

First of all, to show you the division of the ABCD four types of measuring instruments and management requirements, Class A is the highest measurement standards of enterprises, is the government's metrological administrative department approved and authorized social public measurement standards, for trade settlement, safety protection, environmental monitoring and medical health and other aspects included in the national compulsory verification catalogue of measuring instruments. Its management requirements are as follows: 1. File such measuring instruments, require documented management, achieve regular verification, and ensure the corresponding accounts; 2. Develop a mandatory periodic verification plan to ensure the weekly inspection rate of such measuring instruments; 3. Special person is dedicated to real-time supervision of the use of the situation, and it is strictly prohibited to use beyond the deadline to ensure lawful and correct use; 4 Set up full-time professionals to carry out internal inspection, regular maintenance, according to the relevant procedures to ensure good; 5. The confirmed measuring instruments shall be affixed with corresponding marks.

Second, Class B belongs to the enterprise internal measurement of value traceability work measuring instruments, important inspection and measuring instruments for quality control, second and third level energy measurement instruments for trade settlement, security protection, environmental monitoring and medical and health but not included in the scope of the strong inspection catalogue of measuring instruments. Its management requirements are as follows: 1. The establishment of such measuring instruments ledger and relevant technical data regularly verify to ensure that the ledger is corresponding to maintain the correct; 2. According to the national metrological verification regulations or calibration specifications in the period or calibration interval requirements to develop periodic verification or calibration plan can choose internal verification calibration, can also ensure the weekly inspection rate; 3. Special person is responsible for real-time supervision of the use condition, and it is strictly prohibited to use beyond the deadline to ensure qualified and correct use; 4. Set up full-time professionals to carry out internal inspection and regular maintenance, according to the relevant procedures to ensure intact; 5. The confirmed measuring instruments shall be affixed with corresponding marks.

Class C is the main inspection, measurement and experiment measuring instruments for quality control, and the measuring instruments for the measurement and control of main parameters in the production process. Its management requirements are as follows: 1. Establish measuring instruments ledger and the required data to regularly verify the consistency of the accounts to keep the above correct; 2. Refer to the national metrological verification regulations or calibration specifications in the cycle or calibration interval requirements, according to the actual needs of the enterprise to develop a verification (calibration) plan, can be carried out in accordance with the effective national, local or industrial verification (calibration) regulations, self-designed measurement calibration regulations or methods, may not fix the specific verification (calibration) cycle, may not be included in the periodic verification plan, but to determine the longest Validity guarantee, the above does not exceed the validity period. 3. Special person is responsible for real-time supervision of the use condition, and it is strictly prohibited to use beyond the deadline to ensure qualified and correct use; 4. Set up full-time professionals for internal inspection, regular maintenance, according to the relevant procedures to ensure good; 5. The confirmed measuring instruments shall be affixed with corresponding marks.

Class D, as a general measuring instrument with short measuring life and low value measurement and experiment, is a consumable, stable performance and no strict measurement requirements for the measurement and control of important parameters in the production process. Its management requirements are as follows: 1. It is not necessary to establish measuring instruments management ledger, and each user department shall establish corresponding tool ledger or material ledger according to needs, and manage the registered quantity; 2. Measuring instruments can be checked from the time of entering the factory and acceptance; 3. The correct use and integrity of such measuring instruments shall be self-checked by the using department and the user, and metrological confirmation may be submitted if necessary; 4. Such measuring instruments do not carry measurement confirmation marks. Secondly, to introduce the role of ABCD four categories of measuring instruments classification If you are the person in charge of the quality control department of the enterprise, then you must be very familiar with the above classification or understanding. ABCD classification management classification is clear, organized, easy to manage measuring instruments, suitable for large and medium-sized factory measuring instruments management, especially suitable for mining, mineral processing, smelting and hydroelectric power as one of the comprehensive enterprises. In its sense, the use of A, B, C, D classification management method can determine the verification cycle through the change of the quantity value of the measuring instrument and the weekly inspection pass rate, in a more scientific and reasonable method, so that the confirmation interval of the measuring instrument is accurate, reasonable and evidence-based. This classification management method has key points and focuses, which is more convenient to optimize management, seize the primary and secondary, highlight the key points, avoid resource waste, improve the efficiency and quality of measuring instruments, and achieve the purpose of maximizing economic benefits.