The calibration system Nor1504A is capable of calibrating virtually any type of sound measuring instruments, sound calibrators and microphones commercially available, provided that they have been designed in accordance with applicable international standards. Hence, the system is by no means limited to Norsonic products alone.
 

The process of verification and calibration of sound level meters in accordance with international standards is in general divided into an electrical and an acoustical part (IEC60651, IEC 60804 and IEC61672).
 

Special national standards have been designed to cover special needs. A typical example of this could be the BS7580 or the German DIN45657 which describes the testing of time constant F down to 0.25ms; testing of statistical calculations and the Taktmaximal 3 and 5.
 

The international standards describe tests that have been designed for type approval of an instrument design (e.g. IEC61672 part 2), but they do also include tests meant to be performed for verification purposes on a regular basis (e.g. IEC61672 part 3).
 

The Nor1504A instrument is mainly designed for calibration, but by using anechoic and climatic chambers etc., it is possible to apply the system to type approvals as well, since all the test signals needed, can be generated.
 

Other Norsonic products:

• Nor848 - high performance Acoustic Camera 
• Sound Level Meters
• Accessories
• Microphones/Pre-amplifiers
• Software
• Calibrators
• Noise Sources
• Vibration
• Environmental Monitoring
• Building Acoustics
• Hearing Protection System
• Airflow Resistance Measurement System