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sklademVydáno: 2009-05-13
IEC 60534-2-4:2009
Industrial-process control valves - Part 2-4: Flow capacity - Inherent flow characteristics and rangeability
Vannes de régulation des processus industriels - Partie 2-4: Capacité d'écoulement - Caractéristiques intrinsèques de débit et coefficient intrinsèque de réglage
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| Označení normy: | IEC 60534-2-4:2009 |
| Vydáno: | 2009-05-13 |
| Edice: | 2 |
| ICS: | 23.060.40 |
DESCRIPTION
IEC 60534-2-4:2009
IEC 60534-2-4:2009 applies to all types of industrial-process control valves. It defines how to state typical control valve inherent flow characteristics and inherent rangeabilities. It also defines how to establish criteria for adherence to manufacturer-stated flow characteristics. This edition constitutes a technical revision. The main changes with respect to the previous edition are:
- update the normative references;
- delete the terminology included in IEC 60534-1;
- transform the previous Note 1 in Clause 6;
- redraw the graphics;
- delete the previous Figure 3.