DIN 45660-2:2025-09

This document specifies procedures for determining the uncertainty of measured, calculated, or predicted vibration-related quantities (vibration parameters) used: - to assess the risk posed by vibrations in the workplace, - to assess ground-transmitted vibrations in environmental protection, - to assess machine vibrations. The annexes provide detailed examples illustrating application of the individual procedures. Furthermore, this document specifies how to handle uncertainty when comparing determined values with requirement values. This document can be used in practice to determine the uncertainty of vibration-related quantities, as well as in the preparation of standards across various fields of application. Annexes containing examples of the practical handling of measurement uncertainty in the areas of hand-arm vibration exposure at the workplace, hand-arm vibration characteristics of machines, vibrations in environmental protection, machine vibrations, interlaboratory tests, as well as mathematical models and Monte Carlo simulations are included. Uncertainty arises from various influencing factors. These must be distinguished from errors - such as those arising from the use of measuring instruments or the selection of a measurement strategy - that distort the measured quantity but whose influence is not addressed in this document. In order to facilitate a better understanding of measurement uncertainty and errors, examples of errors are listed in a separate annex. This document has been prepared by Working Committee NA 001-03-12 AA "Schwingungseinwirkung auf den Menschen - Hand-Arm-Schwingungen" ("Human exposure to vibration - Hand-transmitted vibration") at DIN/VDI Standards Committee for Acoustics, Noise Reduction, and Vibration Technology (NALS).