BS EN IEC 60942:2018 PDF

What is BS EN IEC 60942- Electroacoustics – Sound calibrators   about?

BS EN IEC 60942  specifies the performance requirements for three classes of sound calibrators of class LS (Laboratory Standard), class 1 and class 2. Acceptance limits are smallest for class LS and greatest for class 2 instruments. Class LS sound calibrators are normally used only in the laboratory; class 1 and class 2 are considered as sound calibrators for field use. A class 1 sound calibrator is primarily intended for use with a class 1 sound level meter and a   class 2 sound calibrator primarily with a class 2 sound level meter, as specified in IEC 61672-1. The acceptance limits for class LS sound calibrators are based on the use of a laboratory   standard microphone, as specified in IEC 61094-1, for demonstrations of conformance to the   requirements of BS EN IEC 60942