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Nor1525 Automatic Calibration System

Nor1525 automatic calibration system for secondary calibration of sound level meters, microphones, and sound calibrators in accredited laboratories per IEC 61672-3, IEC 60942, and other international standards.

Overview

The Nor1525 is a professional-grade automatic calibration system for secondary calibration of sound level meters, microphones, and sound calibrators in accredited laboratories and service centers. Capable of calibrating virtually any type of acoustic measuring instrument according to international standards including IEC 61672-3, IEC 60942, IEC 61260-3, and ANSI S1.4, the Nor1525 provides a comple…

Key Features

• Sound level meter calibration per IEC 61672-3, IEC 60651, IEC 60804, ANSI S1.4
• Microphone frequency response and sensitivity calibration
• Sound calibrator testing per IEC 60942
• Fractional octave filter testing per IEC 61260-3
• Three operation modes: manual, semi-automated, and fully automated
• 24-bit A/D converter with 204.8 kHz sampling frequency
• Automatic calibration certificate generation with uncertainty statements
• 80% faster microphone frequency response measurements than previous systems

Applications

• Accredited calibration laboratories (ISO 17025)
• Sound level meter manufacturers and service centers
• National measurement institutes
• Industrial hygiene and safety equipment calibration
• Environmental noise monitoring organizations
• Government regulatory agencies and standards bodies

Technical Specifications

• Model: Nor1525
• System Type: PC-based automatic calibration system
• A/D Resolution: 24-bit
• Sampling Rate: 204.8 kHz
• SLM Standards: IEC 61672-3, IEC 60651, IEC 60804, DIN 45657, ANSI S1.4
• Calibrator Standards: IEC 60942 (2003 & 2017)
• Filter Standards: IEC 61260-3:2016
• Test Unit: Nor484
• Operation Modes: Manual, Semi-automated, Fully automated
• Certificate Output: Automated with 95% confidence uncertainty statements

Frequently Asked Questions

• What instruments can the Nor1525 calibrate?
  The Nor1525 can calibrate sound level meters, microphones, and sound calibrators according to international standards including IEC 61672-3, IEC 60942, IEC 61260-3, and ANSI S1.4.
• Is the Nor1525 suitable for ISO 17025 accredited laboratories?
  Yes, the Nor1525 is specifically designed for accredited calibration laboratories. It provides traceable calibration certificates with uncertainty statements at 95% confidence level, and includes self-test features for continuous quality assurance.
• How fast is the automated calibration process?
  The Nor1525 uses fast swept-sine measurement techniques that reduce microphone frequency response testing time by up to 80% compared to previous-generation systems, significantly increasing laboratory throughput for high-volume calibration services.

Application Guide

The Nor1525 Automatic Calibration System 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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