NEN EN ISO 23747 : 2015

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
    4.1 Safety for PEFMs that utilize electricity
    4.2 Mechanical safety for all PEFMs
5 Identification, marking and documents
    5.1 Marking of the scale or display
    5.2 Marking of PEFM or packaging
    5.3 Instructions for use
    5.4 Technical description
6 PEFM measurement range
7 Performance requirements
    7.1 Error of measurement
    7.2 Linearity
    7.3 Resistance to flow
    7.4 Frequency response
8 Dismantling and reassembly
9 Effects of mechanical ageing
10 Effects of dropping a hand-held PEFM
11 Cleaning, sterilization and disinfection
    11.1 Re-usable PEFM and parts
    11.2 PEFM and parts delivered sterile
12 Compatibility with substances
13 Biocompatibility
Annex A (informative) Rationale for tests and examples of
                       test apparatus
Annex B (normative) Determination of error, repeatability and
                       resistance to PEFM output
Annex C (normative) Determination of frequency response
Annex D (normative) Test methods for determination of the effects
                       of dismantling, ageing and dropping
Annex E (informative) Environmental aspects
Annex F (informative) Reference to the essential principals
Annex ZA (informative) Relationship between this International
                       Standard and the Essential Requirements
                       of EU Directive 93/42/EEC
Bibliography

Defines requirements for a peak expiratory flow meter (pefm) intended for the assessment of pulmonary function in spontaneously breathing humans.