Mathematical model of a metrological system for servicing control and measuring equipment

Conclusions

• 1. The above relationships are suitable for solving problems of two types: for determining the required levels of errorsα _c,β _c, andβ _r for a projected MSS CME from the given quantitative and qualitative characteristics of the input (N₁₀, q₁₀) and output (N₂₀, q₂₀) instrument flows; and for determining the expected output flow characteristics N₂₀ and q₁₀ from known errorsα _c,β _c, andβ _r of a specific MSS CME and given values of N₁₀ and q₁₀.

• 2. In testing instruments the batch quality is always increased by a factor of 1/β _c(β<1), and in repairing them it is raised by a factor of 1/β _r, the batch volume is then reduced.

• 3. The most effective MSS CME should contain testing sections with a low value ofβ _c and repair sections. The specific values ofα _c,β _c, andβ _r are determined by the criteria of the large system which is serviced by the MSS CME.

The above relationships between the external (N₁₀, N₂₀, q₁₀, q₂₀) and internal (α _c,β _c,β _r) characteristics of the MSS CME testing and repair unit are suitable for solving practical problems in analyzing the unit's operation or in designing new laboratories. The external characteristics are then determined by the volume of metrological work at the serviced installations and the quality of this work, whereas the internal characteristics depend mainly on the departure from the normalizing and technical documents' requirements in testing and repairing instruments, on the condition of the reference measuring equipment, and the qualifications of experts.