SN EN 60534-8-2 : 1993

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Definitions
4 Test systems
5 Characteristics pressure ratio XFz
6 Testing procedures
7 Test data
Table
1 Test section piping
Figures
1a Control valve noise test system
1b Alternative control valve noise test system
2a Top view of test arrangement with test specimen
    inside acoustic environment
2b Top view of an alternative test arrangement with
    test specimen outside acoustic environment
3 Typical curve for characteristic pressure ratio XFz
4 Reference test orifice plate
5 Determination of XFz by peak frequency method
6 Determination of XFz by measuring the overall LpA,
    dB(A), at a constant valve travel