1. Determination of sound power and sound energy levels of noise sources by sound pressure;Technical method in a substantially free sound field above a sound-reflecting plane approved and put into operation by Order of the Federal Agency for Technical Regulation and Metrology,2014
2. Monitoring of the state of equipment of hazardous industries;Vibration of centrifugal pump and compressor units introduced by the Interstate Council for Standardization Metrology and Certification (minutes of March 25 2013 N 55-P),2019