BS 6955-1:1994

Committees responsible
National foreword
Methods
1 Scope
2 Apparatus
3 Ambient conditions
4 Preferred amplitudes and frequencies
5 Method 1
6 Method 2
Annexes
A (normative) Calculation of uncertainty
B (normative) Formulae for the calculation of
     acceleration
Tables
1 Displacement amplitudes for minimum points
B.1 Values for Jn for zero points of the Bessel
     function
Figures
1 Measuring system for the fringe-counting method
     (Method 1)
2 Measuring system for the minimum-point method
     (Method 2)

Lays down detailed specifications for the instrumentation and procedure to be used for primary calibration of rectilinear accelerometers using laser interferometry for dynamic displacement measurements. Coverage includes apparatus and ambient conditions.

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups.

This part of ISO 5347 lays down detailed specifications for the instrumentation and procedure to be used for primary calibration of rectilinear accelerometers using laser interferometry for dynamic displacement measurements.

It is applicable for a frequency range from20 Hz to 5 000 Hz and a dynamic range from10 m/s2 to 1 000 m/s2 (frequency-dependent).

The limits of uncertainty applicable are as follows:

• ± 0,5 % of reading at reference
• frequency (160 Hz or 80 Hz) and reference
• amplitude (100 m/s2 or 10 m/s2) and reference
• amplifier gain setting;
• ± 1 % of reading for frequencies ≥ 1 000 Hz;
• ± 2 % of reading for frequencies > 1 000 Hz.