INDICATION AND MEASUREMENT DEVICE FOR MEASURING LIQUID USAGE Russian patent published in 2000 - IPC

FIELD: monitoring of mass usage in pipelines. SUBSTANCE: device has ultrasound usage transducer with three acoustic channels, liquid density transducer with three gamma sources and three scintillation receivers, and temperature transducer. All transducers are mounted on surface of pipeline. Piezoelectric elements of acoustic channels are mounted at angle with respect to pipeline axis and are located in non-sealed housing. Transducers are located in sealed detachable housing, which has device for unloading pipeline from their weight. In addition device has unit for measuring area of inner cross section of pipeline, which includes ultrasound thickness meter. Signals from transducers are received by sequence of computers, only one of which has keyboard. Sealed housings of transducers and autonomous power supply are filled by air under excessive pressure and are equipped with indicators for opening of their caps. EFFECT: increased precision of measurement under undesirable external influences. 4 cl, 3 dwg