METHOD OF SELECTION OF OPTIMAL BALANCE BETWEEN THE LEVEL OF ACCURACY AND THE METROLOGICAL RELIABILITY OF THE MEASURING CHANNEL OF THE TEST STATION WITH THE LIMITING OF THE COST

Abstract

In the article there is developed the method of choosing the optimal correlation between the initial level of accuracy and the reserve of metrological reliability of measuring channels of the test station, which takes into account the nature of the time-varying metrological characteristics. Allows to provide requirements for limiting the cost of measuring channels of the test station. There are also investigated the possible ways for the manufacturer to ensure the long-term metrological efficiency of the measuring channels of the test station. This is provision of sufficient reserves of metrological reliability in the manufacture of test station and the provision of "stock on aging" in the form of a sufficient margin of stock is normalized limit of permissible error in relation to its actual value. The character of the increase in the error of the measuring channel of the test station is analyzed and the typical dependence of the error of the measuring channels of the test station in time is given. When choosing the optimal balance between the stock of metrological reliability and the precision reserve, a significant difference in the cost of providing the metrological reliability of the measuring channels of the test station with positive and negative accelerations of aging is taken into account, which allows to reduce the costs of construction of the test station. The obtained attitudes can be used for designing the test station and optimizing it according to the cost criterion.

Keywords

• test station, measuring channel, metrological reliability, error