Methods for the calibration of vibration and shock pick-ups — Part 6: Primary vibration calibration at low frequencies

Lays down detailed specifications for the instrumentation and procedure to be used for primary calibration of accelerometers at low frequencies. Applies to all kinds of pick-ups. Is applicable for a frequency range from 0,5 Hz to 20 Hz and a dynamic range from 1 m/s^2 to 200 m/s^2 (frequency-dependent) and from 0,5 mm to 1000 mm. The limits of uncertainty applicable are ± 0,5 % of reading.