Remote acoustic monitoring device which is testable by...

Details Remote acoustic monitoring device which is testable by... Remote acoustic monitoring device which is testable by...

G - Physics

01

N

349/29

G01N 29/00 (2006.01) G01S 15/00 (2006.01) G08B 29/12 (2006.01)

Patent

CA 1189610

A REMOTE ACOUSTIC MONITORING DEVICE WHICH IS TESTABLE BY VARIATION OF THE SUPPLY VOLTAGE Abstract of the Disclosure In an industrial installation which is in- accessible during operation, acoustic-emission testing of each measurement line is performed by means of at least one transducer and a preamplifier which is connected to an acoustic signal processing unit by means of a signal transmission line and a supply line. A potentiometer circuit placed on the supply line produces a variation in the supply voltage and remotely operates a relay for switching the measurement line to testing means comprising a local pulse generator connected between the transducer and the preamplifier. --1--

381096

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