SN EN 61672-1 : 2003

1 Scope
2 Normative references
3 Terms and definitions
4 Reference environmental conditions
5 Performance specifications
  5.1 General
  5.2 Adjustments to indicated levels
  5.3 Directional response
  5.4 Frequency weightings
  5.5 Level linearity
  5.6 Self-generated noise
  5.7 Time weightings F and S
  5.8 Toneburst response
  5.9 Response to repeated tonebursts
  5.10 Overload indication
  5.11 Under-range indication
  5.12 Peak C sound level
  5.13 Reset
  5.14 Thresholds
  5.15 Display
  5.16 Analogue or digital output
  5.17 Timing facilities
  5.18 Radio frequency emissions and disturbances to a
       public power supply
  5.19 Crosstalk
  5.20 Power supply
6 Environmental, electrostatic, and radio frequency criteria
  6.1 General
  6.2 Static pressure
  6.3 Air temperature
  6.4 Humidity
  6.5 Electrostatic discharge
  6.6 AC power frequency and radio frequency fields
7 Provision for use with auxiliary devices
8 Marking
9 Instruction manual
Annex A (normative) Maximum expanded uncertainties of
        measurement
Annex B (informative) AU weighting
Annex C (informative) Specifications for time-weighting
        I (impulse)
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Gives electroacoustical performance specifications for three kinds of sound measuring instruments: - a conventional sound level meter that measures exponential time-weighted sound level; - an integrating-averaging sound level meter that measures time-average sound level; and - an integrating sound level meter that measures sound exposure level.