FIELD: measurement technology. SUBSTANCE: efficiency of inspection increases thanks to use in leak detector of wide-band piezoconverter, comb of retunable band-pass filters, signal compression circuit. Acoustic leak detector uses both active and passive detection of leaks with the aid of acoustic emission simulator and of original technique of electroacoustic tuning of device when receiving surface waves (Reileigh waves). EFFECT: increased efficiency of detection. 2 cl, 3 dwg, 3 tbl
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