Nor278 Reference sound source ISO3741 ISO3743 ISO 3744 ISO3747
Reference sound source for Sound Power measurements.
The rugged and compact design makes it well suited for both laboratory and field use. The design ensures a stable and uniform sound power output with unique long-term stability.
Geonoise Noise registration instruments and software
Geonoise Thailand Co., Ltd.
Address: 555/147-148 Sukhapiban 5
10220 Sai Mai, Bangkok, Thailand
Phone: (+66) 02-0035904
Fax: (+66) 02-0033054
Substitution and Juxtaposition methods for determination of sound power of noise sources according to ISO 3747
Comparison method for determination of sound power of noise sources according to ISO 3741, ISO 3743-1, ISO3744 and 3747.
– A weighted Sound power output : 93dB re 1 pW (50Hz line frequency)
– Sound power 50 Hz – 20 kHz: 94dB re 1 pW (50Hz line frequency);
– Fulfils ISO 6926 for reference sound sources in the extended frequency range 50 Hz – 20 kHz.
– Individual calibrated (accredited calibration optional)
– Long-term stability
– Weight 18,6 Kg