Stanovení mezních hodnot (rozhodovací práh, mez detekce a meze intervalu pokrytí) pro měření ionizujícího záření - Základy a použití - Část 4: Směrnice pro použití (Norma k přímému použití jako ČSN).
NORMA vydaná dňa 1.1.2024
Designation standards: ČSN EN ISO 11929-4
Classification mark: 404400
Catalog number: 518226
Publication date standards: 1.1.2024
The number of pages: 112
Approximate weight : 367 g (0.81 lbs)
Country: Czech technical standard
Kategória: Technické normy ČSN
This document 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