This standard specifies a constancy check of a X-ray system where mainly the X-ray voltage is checked and also the tube current and the constitution of the target which can be changing due to ageing of the tube.The chick filter method is based on a measurement of the close rate behind a defined thick filter using defined distances between the X-ray tube, the filter and the measuring device.This method can be applied for all types of X-ray systems, i.e. for constant potential, half wave and impulse wave generators with a tube current larger than 1 mA
EN 12544-2:2000 history
2000EN 12544-2:2000 Non-destructive testing - Measurement and evaluation of the X-ray tube voltage - Part 2: Constancy check by the thick filter method