Metrological Support of Liquid and Aerosol Particle Counters

The devices for express control of the state of the environment, based on the phenomenon of nuclear magnetic resonance are described. The new method for liquid mixtures composition determination which did not join each other in a chemical reaction is proposed. Using this methodology allows also to define the relative components concentrations from which the studied mixture was formed. The results of the study of mixtures of hydrocarbon media is presented. The comparison of the calculations of composition and components concentrations for media with experiment is conducted. The Application of the proposed method allows us to determine the contribution of absorption and dispersion signals in registered NMR signal from the condensed medium which is both in a stationary and in a flowing state.

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The determination of concentration and components composition for mixtures of hydrocarbon media with its express control

Давыдов

Myazin

Grebenikova

et al. 2019

Izmer. Tekhn.

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The new method for longitudinal relaxation time control of flowing liquid in the entire range of its expenditure measuring

et al. 2020

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The problems of the condition control of flowing liquid during its use in different industries, energy and agriculture are reviewed. The devices of the flowing liquid condition control whose operating principle is based on the phenomenon of nuclear magnetic resonance are presented. This devices do not have the disadvantages and limitations of use inherent in optical analyzers and flowing refractometers. At using controls based on the phenomenon of nuclear magnetic resonance the controlled parameters are the relaxation times of the flowing fluid, in particular, the greatest difficulties arise when measuring the longitudinal relaxation time. The method for control of longitudinal relaxation time T1 of flowing liquid in the entire range of measuring its expenditure is proposed. To implement a new method the design of nuclear magnetic flowmeter-relaxometer is developed. The obtained data are compared with the measurement results of values T1 for liquid media being in a stationary state are recived on industrial nuclear magnetic relaxometer and is determined them coincidence within the measurement error.

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Metrological Support of Liquid and Aerosol Particle Counters

Cited by 2 publications

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The determination of concentration and components composition for mixtures of hydrocarbon media with its express control

The determination of concentration and components composition for mixtures of hydrocarbon media with its express control

The new method for longitudinal relaxation time control of flowing liquid in the entire range of its expenditure measuring

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