METHOD OF MEASURING THICKNESS OF ICE LAYER AT INNER SURFACE OF PULP FEED-LINE

摘要

FIELD: measurement technology. ^ SUBSTANCE: mechanical stroke is used as physical influence onto outer wall of tube. Frequency-amplitude spectrum of replicated sonic signal is compared with basic frequency-amplitude spectra achieved preliminary during experiment for different levels of thickness of glaciations onto inner surface of pulp feed-lines for identical stroke influence onto tube. ^ EFFECT: monitoring of mode of glaciations at restricted time and labor input of measurements. ^ 1 dwg