ISO 11929系列规定了电离辐射计量领域中的一个程序，用于计算非负电离辐射测量的“判定阈值”、“检测限”和“覆盖区间限”，当进行预选时间或计数的计数测量时。测量结果来自总计数率和背景计数率，以及基于评估模型的进一步数量。具体而言，被测量物可以是净计数率，即总计数率和背景计数率之差，也可以是样本的净活动。它还可能受到测量系统校准、样品处理和其他因素的影响。购买本文件时可获得的所有当前修订均包含在购买本文件中。

The ISO 11929 series specifies a procedure, in the field of ionizing radiation metrology, for the calculation of the "decision threshold", the "detection limit" and the "limits of the coverage interval" for a non-negative ionizing radiation measurand when counting measurements with preselection of time or counts are carried out. The measurand results from a gross count rate and a background count rate as well as from further quantities on the basis of a model of the evaluation. In particular, the measurand can be the net count rate as the difference of the gross count rate and the background count rate, or the net activity of a sample. It can also be influenced by calibration of the measuring system, by sample treatment and by other factors.All current amendments available at time of purchase are included with the purchase of this document.