Nor278 Reference Sound Source
Calibrated reference sound source for sound power measurements.
Overview
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 d…
Key Features
- Calibrated traceable sound power output per ISO 6926
- Certified calibration with traceable documentation
- Stable broadband spectrum from 100 Hz to 10 kHz
- Long-term stability within ±0.5 dB
- Suitable for ISO 3741, ISO 3744, ISO 3745, and ISO 3747 verification
- Robust and reliable for laboratory and field use
- Essential for ISO 17025 accredited laboratory quality assurance
Applications
- Sound power measurement procedure verification per ISO 3741/3744/3745
- Laboratory quality assurance and system validation
- Inter-laboratory comparison programs
- ISO 17025 accreditation compliance
- Industrial equipment noise certification
- Environmental noise impact assessment support
Technical Specifications
- Standards: ISO 6926
- Sound Power Level: ~90 dB re 1 pW (calibrated)
- Frequency Range: 100 Hz – 10 kHz
- Stability: ±0.5 dB
Frequently Asked Questions
- What is a reference sound source used for?
It provides a known, calibrated sound power output for verifying that your measurement system, environment, and procedures are producing accurate results according to ISO 3741, ISO 3744, ISO 3745, or ISO 3747. - How often should it be recalibrated?
Annual recalibration at an accredited laboratory is recommended to maintain traceable sound power verification and comply with ISO 17025 quality management requirements. - Is the Nor278 required for ISO 3741 measurements?
ISO 3741 and related standards require qualification of the test environment using a reference sound source. The Nor278 provides the traceable reference needed to demonstrate that your reverberation room or test environment meets the measurement accuracy requirements.
Application Guide
The Nor278 Reference Sound Source belongs to the Norsonic Calibration range. See the Calibration application guide for system configuration, compatible accessories, and applicable measurement standards.
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Why Norsonic?
- Manufactured in Norway — decades of acoustic measurement heritage; all instruments designed and built in Norsonic AS, Lierskogen, Norway
- IEC 61672 Class 1 — highest accuracy class for professional and regulatory acoustic measurement
- International type approvals — PTB (Germany) and LNE (France); accepted by environmental authorities across the region
- 3-year manufacturer warranty — covers parts and labour; Norsonic Asia authorized service center support throughout the region
- Open data formats — .nox files work with NorReview and can be exported to CSV, Excel, and third-party analysis software
Calibration and Compliance
- All Norsonic instruments require periodic IEC 61672-3 calibration — Norsonic Asia provides factory-authorized calibration services with full DANAK-traceable certificates
- Calibration interval: 1 year for ISO 17025 accredited laboratories; 2 years for field instruments in non-accredited applications
- Field calibration check: use an IEC 60942 Class 1 sound calibrator (94 dB or 114 dB) before and after each measurement session
- Loaner instruments available during calibration to minimize project downtime — contact Norsonic Asia for loaner availability
Availability & Regional Support
Available from Norsonic Asia — the factory-authorized distributor for ASEAN, GCC, and South Asia. Instrument supply includes 3-year manufacturer warranty, factory-authorized calibration services, operator training, and after-sales technical support.
- Typical lead time: 3–6 weeks from order confirmation (ex-factory Norway)
- Countries served: Singapore, Malaysia, Thailand, Vietnam, Philippines, Indonesia, UAE, Saudi Arabia, Qatar, Kuwait, India, Bangladesh, Sri Lanka, and more
- Technical support: English and Arabic; response within 1 business day
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