DENSITY METRE-FLOW METRE OF FLUID MEDIA Russian patent published in 2010 - IPC G01N9/26 G01F1/86 G01F1/37 

FIELD: measurement equipment.

SUBSTANCE: invention is intended for measuring liquid parametres immediately in flow. Density metre - flow metre includes measurement column, sensors of absolute pressure 2 and temperature 14 of measured liquid, sleeve 6. On vertical branch 3 of measurement column there installed at H distance are pressure samplers 4, 5, and on sleeve 6 - pressure sampler 8 and temperature sensor 7 of "reference" fluid put to sleeve. Horizontal branch 15 of measurement column is made with variable diametre and has section 16 of calibrated pipeline with smaller diametre D₁ and section 17 of calibrated pipeline with increased diametre D₂, on which there located are pressure samplers 18, 19. Pulse tubes 9, 11, 12, 20, 21 with "reference" fluid (for example, organic-silicon) connect pressure samplers to appropriate pressure difference transmitters 13, 22. Internal coating of vertical branch reduces resistance to fluid flow. Data processing unit 23 calculates density and mass flow of measured fluid as per the given formulae.

EFFECT: improving measurement accuracy.

2 cl, 1 dwg