First, the principle of classification of measuring instruments
(a) the scope of Class A measuring instruments:
1. The company's highest standard of measurement and measurement of standardized instruments;
2. For trade settlement, safety and security, medical and health care, and environmental monitoring, and included in the scope of mandatory verification of measuring instruments measuring instruments;
3. production process Production process and quality testing of key parameters with measuring instruments;
4. In and out of the plant material accounting with measuring instruments;
5. Precision testing of high accuracy or frequent use and poor reliability of measuring instruments.
(B) the scope of Class B measuring instruments:
1. safety, health care and environmental monitoring, but is not included in the mandatory verification of the scope of measuring instruments;
2. production process is not a key parameter of the measuring instruments;
3. product quality of the general parameters of the detection of measuring instruments;
4. Second, three energy measurement with measuring instruments;
5. Internal material management with measuring instruments.
(C) the scope of C measuring instruments:
1. Low-value consumable, non-compulsory verification of measuring instruments;
2. The company's living area of the internal energy distribution of measuring instruments, auxiliary production measuring instruments;
3. In the process of using the measurement of data in the measurement of imprecise requirements of the measuring instruments;
4. The national metrological administrative departments State measurement of administrative departments to allow a one-time verification of measuring instruments.
Second, the classification of measuring instruments management
(a) A class of measuring instruments management
1. A class of measuring instruments in the mandatory calibration of measuring instruments, must be strictly in accordance with the national measurement of the administrative departments of the calibration of the management, the implementation of the mandatory inspection. Measuring instruments belonging to non-compulsory calibration, according to the relevant calibration management methods, rules and regulations and calibration cycle for periodic calibration;
2. High accuracy, easy to change the value of measuring instruments listed as a sampling of the frequent use of the focus of the supervision and management of the strengthening of the daily routine;
3. A class of measurement of the number of instruments configured to ensure that the measuring instruments on a regular basis for calibration, calibration and maintenance during the period of production and operation of normal activities;
3. Activities carried out normally;
4.A measuring instruments in principle by the measurement of the management of unified control management.
(B) Class B measuring instruments management methods
1. Measuring instruments included in the scope of Class B management, such as meeting the requirements of the national verification procedures should be in accordance with the provisions of the cycle of verification;
2. No verification procedures but the need for validation of measuring instruments (testing equipment) should be in accordance with the provisions of the validity of the standard;
3. Class B measuring instruments equipped with the number of normal operation of production and business activities to ensure that the enterprise;
4. Ensure that the enterprise production and business activities are carried out normally.
(C) C measuring instruments management
1. General tools with measuring instruments, according to the actual use of the implementation of a one-time verification and validity of the management of the use;
2. No strict requirements on the accuracy, performance is not easy to change the low-value and easy to consume measuring instruments and tools can be arranged for a one-time verification of measuring instruments before use;
3. Class C measuring instruments to carry out supervision and management, such as occasional spot checks and to compare the way they are calibrated.