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Sound Intensity

Sound Intensity Measurements with Nor150

Complete solution for ISO 9614 sound intensity and sound power measurements.

Overview

The Norsonic sound intensity measurement solution combines the Nor150 dual-channel analyser with the Nor1290 sound intensity probe kit to deliver a complete, ISO 9614-compliant system for sound power determination and noise source identification. This proven combination enables engineers to measure both the magnitude and direction of sound energy flow, providing insights that conventional sound pr…

Key Features

  • ISO 9614-1 (discrete point) and ISO 9614-2 (scanning) compliant workflow
  • Nor150 dual-channel analyser with phase-matched acquisition
  • Nor1290 sound intensity probe kit with precision spacers
  • Real-time reactivity index (pressure-intensity index) display for measurement quality verification
  • Broadband and 1/3 octave band sound intensity analysis
  • Scanning and discrete point measurement methods supported
  • Nor850 reporting software with dedicated Sound Intensity module
  • Sound power determination per ISO 9614 for machinery certification

Applications

  • Sound power determination of industrial machinery per ISO 9614
  • Machinery noise certification for export and regulatory compliance
  • Transmission loss testing of building partitions, doors, and windows
  • Noise source identification and ranking in reverberant factory environments
  • Oil and gas equipment noise characterization for mitigation planning
  • HVAC system sound power measurement for specification compliance

Technical Specifications

  • Analyzer: Nor150 (dual channel)
  • Probe: Nor1290 sound intensity kit
  • Standards: ISO 9614-1, ISO 9614-2
  • Software: Nor850 with SI module

Frequently Asked Questions

  • What equipment is needed for sound intensity measurements?
    You need the Nor150 dual-channel analyser, the Nor1290 sound intensity probe kit (which includes matched microphone pairs and precision spacers), and Nor850 software with the Sound Intensity module for analysis and reporting. The NorVirtual App can also be used for live mobile display during measurements.
  • Which measurement methods are supported?
    Both discrete point (ISO 9614-1) and scanning (ISO 9614-2) methods are fully supported. The discrete point method divides the measurement surface into segments with individual readings, while the scanning method continuously sweeps the probe across the surface for faster data collection.
  • What is the reactivity index and why does it matter?
    The reactivity index (pressure-intensity index) indicates the quality of the sound intensity measurement by comparing the sound pressure level with the sound intensity level. A high reactivity index warns of excessive reactive sound fields that can compromise accuracy. The Nor150 displays this in real time so operators can verify measurement validity on site.

Application Guide

The Sound Intensity Measurements with Nor150 belongs to the Norsonic Sound Intensity range. See the Sound Intensity application guide for system configuration, compatible accessories, and applicable measurement standards.

Related Norsonic Products

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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