ISO 8041-2-2021 pdf free download – Human response to vibration — Measuring instrumentation — Part 2: Personal vibration exposure meters.
This document specifies minimum requirements for personal vibration exposure meters (PVEM).
This document is applicable to instruments designed for measurements of whole-body vibration in thecontext of industrial hygiene applications (according to lS0 2631-1,IS0 2631-2 and lSo 2631-4) and/orhand-arm vibration (according to ISO 5349-1) together with the associated exposure times.
This document provides specified design goals and permitted tolerances that define the minimumperformance capabilities and functional requirements of instruments designed to measure personaldaily vibration exposure.
This document does not apply to instruments designed to measure or log exposure times without alsoperforming vibration measurement.Instrumentation of this type is described in ISO/TR 19664.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments]) applies.ISO 2041, Mechanical vibration, shock and condition monitoring —Vocabulary
ISO 2631-1, Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration —Part 1: General requirements
ISO 2631-2, Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration —Part 2: Vibration in buildings (1 Hz to 80 Hz)
ISO 2631-4,Mechanical vibration and shock — Evaluation of human exposure to whole-body vibration —Part 4:Guidelines for the evaluation of the effects of vibration and rotational motion on passenger and crewcomfort in fixed-guideway transport systems
ISO 5347 (all parts), Methods for the calibration of vibration and shock pick-ups
ISO 5349-1,Mechanical vibration —Measurement and evaluation of human exposure to hand-transmittedvibration — Part 1: General requirements
ISO 5805, Mechanical vibration and shock — Human exposure — Vocabulary
ISO 8041-1:2017,Human response to vibration — Measuring instrumentation — Part 1: General purposevibration meters
ISO 10326-1,Mechanical vibration — Laboratory method for evaluating vehicle seat vibration —Part 1:Basic requirements
ISO 15230-1, Mechanical vibration and shock — Coupling forces at the man-machine interface for hand-transmitted vibration
3.2
permanent measurement system
system which is permanently incorporated into or fitted onto a machine
Note 1 to entry: A permanent measurement system is not designed to be routinely transferred to other vibratingmachinery.
3.3
non-permanent measurement system
system which is designed to be used on several machines or other vibrating objects
Note 1 to entry: A non-permanent measurement system is capable of routinely being transferred from onevibrating object or machine to another.
3.4
user
person authorized to operate a PVEM (3.1)
3.5
operatorworker
person who performs a work task at a workplace
3.6
logging
storing measured acceleration values at regular time intervals
3.7
logging step
time interval between the start of two consecutive logging (3.6) periods
3.8
measurement period
duration of all measurements, representing the worker’s (3.5) exposure timeNote 1 to entry: The measurement period usually comprises many logging steps (3.7).
3.9
transient acceleration artefact
event or effect that can alter the computation of workers'(3.5) daily exposure to vibration
Note 1 to entry: For a PVEM (3.1), it is essential to log sufficient information to identify transient accelerationartefacts for the purpose to treat them in real time or in the post-processing.
4 Reference environmental conditions
Reference environmental conditions for specifying the performance of a personal vibration exposuremeter are the following:
– air temperature: 23 °C;- relative humidity: 50 %.
5Performance specifications
5.1 General characteristics
5.1.1 Common characteristics
A personal vibration exposure meter (PVEM) is a vibration measurement system meeting the relevantrequirements of ISo 8041-1 with the additional capability to monitor personal exposures up to a fullworking day.
Since personal vibration exposure meters are instruments capable of measuring and computing dailyvibration exposures they are simple to use and implement (internal complexity hidden from the user)and automatic (i.e. they do not require manual post-processing or computations), while displayingaccurate and reliable results.Hence, as compared to general-purpose vibration meters,PVEM shall runalgorithms that replace as much as possible any required manual signal post-processing.ISO 8041-2 pdf download.