This standard specifies the test method for a non-invasive measurement of X-ray tube voltages using the energy spectrum of X-rays (spectrometric method). It covers the voltage range from 10 kV to 500 kV.
DS/EN 12544-3:2002 history
2002DS/EN 12544-3:2002 Non-destructive testing - Measurement and evaluation of the X-ray tube voltage - Part 3: Spectrometric method