JB/T 11602.2-2013 (English Version) PDF

Scope: This part of JB/T 11602 specifies the permanent calibration of X-ray devices, mainly the detection of X-ray tube voltage, tube current and the detection of target structure changes caused by tube aging. The thick filter plate method is a method based on the detection of dose rate behind a thick filter plate determined by the distance between the X-ray tube, filter plate and detection device. This method is very sensitive when the voltage changes, but it cannot provide the absolute voltage value of the X-ray tube. Therefore, we need a reference value, and it is recommended to find this reference value, for example, in the acceptance test of the system. The thick filter plate method is a fairly simple technique that can be used by X-ray system operators to perform permanent calibration of the system and can be used by X-ray system controllers to perform permanent calibration of the system. The thick filter plate method is also suitable for continuity verification after changing some components that may affect the X-ray tube voltage. This method can be applied to various types of X-ray systems, such as potentiostatic (systems), filtered (systems) and pulse signal generators with tube currents greater than 1 mA. This section is suitable for long-term calibration of X-ray tube voltage using the thick filter plate method.

JB/T 11602.2-2013 Referenced Document

GB/T 12604.2-2005 Non-destructive testing.Terminology.Terms used in radiographic testing

2013 JB/T 11602.2-2013 Non-destructive testing instruments.Measurement and evaluation of the X-ray tube voltage.Part 2: Constancy check by the thick filter method