State Primary Standard Unit of Length for Measuring the Roughness Parameters Rmax, Rz and Ra in the Range from 0.025 μm to 1600 μm
Reproduction and maintenance of length unit in the field of measurements of the parameters of roughness. Transferring of the size of length unit in the field of
measurements of the parameters of roughness to the working standards of the 1st class (measures of roughness) and measuring instruments in accordance with DSTU 5017:2008 “National verification scheme for measuring instruments of measuring instruments of the parameters of roughness Ra, Rmax and Rz in the range from 0,025 μm to 1600 μm”.
Metrological characteristics | |||
Range | from 0,025 μm до 1,0 μm | from 1,0 μm to 1600 μm | |
Uncertainty by type A (uA) | 0,003 μm | 0,02 μm | |
Uncertainty by type B (uB) | 0,0016 μm | 0,0165 μm | |
Total standard uncertainty (uC) | 0,0034 μm | 0,026 μm | |
Extended uncertainty (U) | 0,007 μm | 0,052 μm | |