2045S single-ended output broadband acoustic emission sensors 300 ~ 2200kHz broadband single-ended output acoustic emission sensors acoustic emission sensor model is complete, the user can choose according to demand, in order to meet a variety of acoustic emission testing applications. On acoustic emission localization, the actual use of a large number encountered structurally stable metal structure, such as pressure vessels, small anisotropy of such materials, sound attenuation coefficient is small, most of the frequency range 25KHz ~ 750KHz, So the choice of resonant sensor more appropriate. Metals and other applications often use the pass band frequency 150KHz resonant narrow band sensor to measure acoustic emission signal engineering materials. Narrowband resonant sensor high sensitivity and a high signal to noise ratio, low price, specifications, such as knowing the basic characteristics of the spread of the sound source, to obtain a frequency range of the acoustic emission signal processing or want to improve system sensitivity, Select the appropriate type of resonant sensor is better, such as the sound source localization. It should be noted that the so-called narrow-band resonant sensor is not only sensitive to a certain frequency signal, but sensitive to certain frequency bands, other lower-band signal sensitivity.