NS EN ISO 3822-1 : 1999 AMD 1 2008

      Foreword
      Introduction
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Test arrangement (see Figure 1)
      5.1 Test room
      5.2 Correction for background noise
      5.3 Test wall
      5.4 Test pipe
      5.5 Connection of appliances
      5.6 Water supply system
      5.7 Stabilising and checking the test arrangement
      5.8 Measurement of intrinsic noise of installation
            arrangement
6 Test equipment
      6.1 Sound level meter and filters
      6.2 Hydraulic measuring instruments
7 Installation noise standard
8 Test procedure
      8.1 General
      8.2 Determination of appliance sound pressure level Lap
9 Expression of results
10 Test report
Annex A (informative) Procedure for venting the piping system
                      (test pipe and twin outlet etc)
Annex B (informative) Alternative procedures for measurements
                      for computer-aided test facilities
Annex C (normative) Selection of samples

Defines a method of measurement, in the laboratory, of the noise emission resulting from the flow of water through appliances and equipment used in water supply installations. The items covered include draw-off taps, in-line valves and special appliances, for example pressure reducers and water-heating appliances, all of which are hereafter referred to as "appliances". The method specified makes it possible to obtain comparable results of measurements in different laboratories.