Nor1228 Free-field Microphone

The Nor1228 is a 1/2" free-field condenser measurement microphone engineered for high sound pressure level environments. With a maximum capability exceeding 150 dB peak, the Nor1228 enables accurate measurement of intense noise sources that would overload standard microphones, making it indispensable for industrial, military, and impulsive noise applications where extreme sound levels are encountered. The high-level capability is achieved through a lower-sensitivity diaphragm design that extends the upper measurement limit while maintaining Class 1 accuracy across the measurement range. This design trade-off means the Nor1228 has a higher noise floor than standard-sensitivity microphones, making it specifically optimized for environments where sound levels consistently exceed 100 dB. The free-field frequency response and 1/2" IEC 61094-4 compliance ensure that measurements remain accurate and traceable. For industrial facilities across Saudi Arabia, the UAE, and the broader GCC, the Nor1228 addresses critical measurement needs in high-noise environments including turbine halls, compressor stations, heavy machinery areas, blasting operations, and close-proximity measurements near jet engines and large industrial fans. It is also valuable for impulsive noise assessment from pile driving, demolition, and weapons testing where peak levels far exceed the capabilities of standard microphones.