Nor278 Reference Sound Source

The Nor278 Reference Sound Source is a precision calibrated broadband noise source providing traceable, stable sound power output for verification and qualification of sound power measurement procedures. Compliant with ISO 6926, the Nor278 produces a known, certified sound power level of approximately 90 dB re 1 pW across the 100 Hz to 10 kHz frequency range, with long-term stability within ±0.5 dB. This traceable output is essential for laboratories performing sound power determinations to ISO 3741, ISO 3744, ISO 3745, and ISO 3747. Calibration laboratories, research institutions, and industrial testing facilities use the Nor278 to verify that their measurement environments, instrumentation, and procedures are producing accurate sound power results. By comparing the measured sound power of the reference source against its certified values, engineers can identify systematic errors in their measurement chain and demonstrate compliance with quality management requirements under ISO 17025 accreditation. The Nor278 is widely used in inter-laboratory comparison programs where multiple facilities must demonstrate equivalent measurement capability. For industrial facilities across the GCC, including oil and gas processing plants, power generation facilities, and manufacturing operations, the Nor278 supports sound power measurement programs required for equipment noise certification, environmental noise impact assessments, and compliance with occupational noise regulations. Its stable, repeatable output makes it the trusted reference standard for validating sound power measurement systems worldwide.