Nor1525 Automatic Calibration System

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 complete, traceable calibration workflow from test setup through automated certificate generation. The system features a PC-based platform with three operation modes: manual for detailed investigation, semi-automated for guided procedures, and fully automated for high-throughput calibration services. The 24-bit A/D converter with 204.8 kHz sampling frequency delivers the measurement resolution required for traceable calibration to SI units. Fast swept-sine measurement techniques reduce microphone frequency response testing time by up to 80% compared to previous-generation systems, significantly increasing laboratory throughput. Automated calibration certificate generation with uncertainty statements at 95% confidence level streamlines the documentation workflow for ISO 17025 accredited laboratories. The Nor1525 includes self-test features for verifying the calibration system's own performance, supporting the continuous quality assurance required by accreditation bodies. For national measurement institutes, calibration service providers, and instrument manufacturers across the GCC and internationally, the Nor1525 provides the capabilities needed to maintain traceable calibration infrastructure for the growing fleet of acoustic measurement instruments deployed in environmental monitoring, building acoustics testing, and occupational health programs.