The Nor1239 is a high quality free-field 1/2-inch electret microphone conforming to the Class 1 specifications for sound level meters specified in IEC 61672-1 class 1.
The microphone is compliant with working standard microphone specifications (IEC 61094-4 Type WS2F). It can therefore be used as a direct replacement for other prepolarized free field microphones with a nominal sensitivity of 50 mV/Pa.
The use of high-quality materials and an artificial aging process ensures an ultra-stabile microphone, designed for the most demanding applications.
Each microphone is supplied with individual calibration certificates.
The Nor1239 is a high quality free-field 1/2-inch electret microphone conforming to the Class 1 specifications for sound level meters specified in IEC 61672-1 class 1. The microphone is compliant with working standard microphone specifications (IEC 61094-4 Type WS2F). It can therefore be used as a direct replacement for other prepolarized free field microphones with a nominal sensitivity of 50 mV/Pa. The use of high-quality materials and an artificial aging process ensures an ultra-stabile microphone, designed for the most demanding applications. Each microphone is supplied with individual calibration certificates.
Nor1239 Free-field microphone integrates into standard workflows for calibration. We can pre-define checklists, field verification, and reporting aligned to your governing standard.