60.60 Standard published Jun 19, 2009
CENELEC
CLC/TC 65X Industrial-process measurement, control and automation
European Norm
23.060.40 Pressure regulators | 25.040.40 Industrial process measurement and control
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.
PUBLISHED
EN 60534-2-4:2009
60.60
Standard published
Jun 19, 2009