EN 50504:2008

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Validation accuracies
5 Consistency
6 Frequency of validation and calibration
7 Validators of welding equipment
8 Validation
   8.1 General
   8.2 Manual metal arc welding with covered electrodes
   8.3 Tungsten inert gas
   8.4 Metal inert/active gas and flux cored arc welding
   8.5 Auxiliary components
9 Validation techniques
   9.1 General
   9.2 Safety precautions
   9.3 Instrumentation
   9.4 Power source loads
   9.5 Method
10 Validation labels and certificates
   10.1 Validation labels
   10.2 Validation certificate
Annex A (informative) Accuracies for precision grade power sources
Annex B (informative) Wire feed equipment
      B.1 Validation accuracies
      B.2 Requirements for validation
      B.3 Method
Annex C (informative) Slope, pulse and synergic controls
      C.1 Validation accuracy
      C.2 Requirements for validation
      C.3 Method
      C.4 Pulsed MIG and synergic controls
Annex D (informative) Precautions to be taken with TIG welding
        equipment
Annex E (informative) Validation of ancillary components in a
        welding system
Annex F (informative) Voltage drops in the welding circuit
Bibliography

This European Standard specifies validation methods for arc welding equipment constructed and used to the accuracy specified in EN 60974-1 or other equivalent standards. The accuracy of this equipment is designated as standard grade. This European Standard is applicable to a)arc welding power sources, b)wire feeders, c)welding instrumentation. This European Standard is not applicable to arc striking and stabilizing device. Calibration, verification and validation of equipment for other welding processes and ancillary equipment which may affect the quality of the weld, e.g. flow gauges, thermocouples, robots and manipulators are given in EN ISO 17662.