Actively generated noise liquid flowmeter.
A new noise flowmeter with two transducers has been tested experimentally in water. It detects the noises generated by the interaction between artificially introduced air bubbles and a built-in obstacle with a downstream transducer, and differentiates them from the external noises detected by the upstream transducer in a pipe. The system includes processing instrumentation with functions such as averaging and difference-operating for reduction of external noise effects.
Tanisawa
S
S
Nippon Inst. of Technol., Saitama.
Hirose
H
H
Yoshihisa
N
N