Free-field microphone Norsonic Nor1227

Name: Free-field microphone Norsonic Nor1227
Brand: Norsonic
SKU: Nor1227
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Nor1227

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Nor1227 Free-field microphone

Nor1227 is a ½” free-field, high sensitivity self-polarised microphone for use in applications where environmental or safety considerations do not permit the use of 200-volt polarisation supplies, or as a general IEC 61672 Class 1 microphone in sound level meters with no polarisation voltage.

All Norsonic microphones are Free-field types. A free field microphone is designed to measure the sound pressure in the sound field, compensating for the influence of the presence of the microphone in the sound field. In effect, the microphone measures the sound pressure as it existed before the microphone was introduced in the sound field, i.e. Free-field conditions. Applicable standard is IEC 61672 and the former IEC 60651. The free field microphone should be pointed towards the sound source at a 0° angle of incidence.