Portable impedance meter system from B&K

摘要

Brueel & Kjaer created a portable impedance meter system, Type 9737 The firm says it provides aerospace engineers with a user-friendly system, suitable for carrying out research and production quality control impedance measurements, up to 150 dB SPL on engine nacelle liners. The system allows key acoustic parameters, such as impedance spectra vs. OASPL and acoustic resistance versus acoustic velocity, to be extracted in-situ. An automated pass/fail routine allows nonacoustic specialists to carry out production quality control measurements.