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015014 - ČSN EN ISO 16526-2 - Nedestruktivní zkoušení - Měření a hodnocení napětí na rentgence - Část 2: Kontrola stálosti metodou tlustého filtru | ||
| Název : 015014 - ČSN EN ISO 16526-2 - Nedestruktivní zkoušení - Měření a hodnocení napětí na rentgence - Část 2: Kontrola stálosti metodou tlustého filtru
Označení normy : ČSN EN ISO 16526-2 Katalogové číslo : 510410 Třídící znak : 015014 Účinnost : 2020-10-01 Věstník : 2020.09 Strany : 20 Převzata :vyhlášením ve Věstníku - v angličtině | ||
| Cena : | 228.00 Kč (DPH= 0%), s DPH= 228.00 Kč | |
| ANOTACE "ČSN EN ISO 16526-2 This part of ISO 16526 specifies a constancy check of a X-ray system where mainly the X-ray voltage is checked the tube current and the constitution of the target which can be changing due to ageing of the tube. The thick filter method is based on a measurement of the dose rate behind a defined thick filter using defined distances between the X-ray tube, the filter and the measuring device. This method is very sensitive to changes of the voltage, but it does not provide an absolute value for the X-ray tube voltage. Therefore, a reference value is needed and, it is recommended to find this reference, for example, within the acceptance test of the system. The thick filter method is a rather simple technique and may be applied by the operator of an X-ray system to perform regularly a constancy check of the system. The method can also be applied for consistency checks after changing components which may affect the X-ray tube voltage. 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." | ||