Nor278 Reference sound source0 pages

Product Data

Reference Sound Source
Nor278
Application
• 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.

Features

• 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);
• Fulls 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 Kg
• Rugged

The reference sound source Nor278 is designed to produce a
stable and uniform sound power output with unique long-term
stability. The high sound power output makes it ideal for sound
power measurements in a noisy environment. The rugged, but
yet portable and light weight construction is perfect for eld us
as well a laboratory use.
Every effort is made in the design to ensure a uniform frequency response and optimum directional characteristic well inside
the requirements in ISO 6926.

PD 278 Ed1Rev1 Eng 1012

Accredited Calibration
Each unit is carefully assembled and individual tested. To enhance the level of quality and traceability of your measurements every unit can optionally be accredited calibrated by
the Norsonic Calibration Laboratory in accordance to ISO
6926. This service is also offered for periodic recalibration.
Norsonic Calibration Laboratory is an accredited laboratory to
work in compliance with ISO/IEC 17025 in carrying out calibration of acoustical equipment for measuring noise (sound
level meters, microphones, dose meters and acoustical calibrators), accelerometers, tapping machines and reference
sound sources. The accreditation is recognized internationally
through European and global multilateral agreements in more
than 40 countries around the world made through the International Laboratory Accreditation Cooperation – ILAC. Thus the
Norwegian Accrediting body has established that Norsonic
calibrations are internationally accepted as being carried out
in an accredited laboratory.