State Primary Standard of Acceleration Unit for Three-Component Accelerometry

Reproduction and maintenance of the acceleration unit in the three mutually transverse coordinates in the range of low and infralow frequencies. Transferring of the sizes of the units to the working standards of the 1st class and to the working measuring instruments: seismic sensors, accelerometers of one-, two and three-components of the extended precision by means of the method of the direct measurements in accordance with DSTU 4452:2005 “Metrology. National verification scheme for measuring instruments of vibration acceleration in the frequency range from 0,001 Hz to 10 Hz”.

Metrological characteristics


from 0,0005 m/s2 to 9,81 m/s2

from 0,001 Hz to 10 Hz

Uncertainty by type A (uA)

0,005 m/s2

Uncertainty by type B (uB)

0,0021 m/s2


Total standard uncertainty (uC)

0,0054 m/s2

Extended uncertainty (U)

0,0108 m/s2