No 11 (2012)
FUNDAMENTAL PROBLEMS OF METROLOGY
3-6 73
Abstract
The model of navigation information integration for determination of the Earth gravitational field strength is suggested and investigated. The results of numerical experiment illustrating capabilities of integrated system are presented.
6-9 65
Abstract
A new approach to the identification of orbital measurements of space apparatus, taking into account the systematic components of measurement errors, is proposed. To do this, formed monitoring discrepancy involves the difference between two consecutive measurements and extrapolation values, which allows to identify the orbital measurements of space apparatus without knowing the magnitude and sign of systematic errors.
GENERAL PROBLEMS OF METROLOGY AND MEASUREMENT TECHNIQUES
10-14 99
Abstract
The shortcomings of GUM [1] that lead to unpredictable results when using the law of distribution for estimation of measurements uncertainty are systematized. The new interpretation of measurement random error concept is given. The coincidence of characteristics of measures of measurements uncertainty and precision is analytically substantiated.
15-18 110
Abstract
The methods of phase division of channels in sensors measuring circuits allowing to exclude the finite value of operating amplifier gain factor error and to ensure the conversion of sensor informative parameter invariant to cable parameters are suggested.
18-21 142
Abstract
The method of estimation of the reliability of multiparametric measuring control results for limited production lots is suggested.
OPTICOPHYSICAL MEASUREMENTS
21-25 64
Abstract
The new method of microobjects imaging based on computer processing of digital interferograms registered by means of modified Fourier-spectrometer is suggested. The process of formation of digital interferograms reflecting the microobject spatial information is discribed. The requirements to the width of radiation source spectrum for transmission of object spatial structure are discussed. The experimental results of image holographic recording in white light are presented.
THERMOPHYSIC MEASUREMENTS
26-28 75
Abstract
The principles of action and a scheme for constructing low-frequency ac amplifier, which has software-controlled transfer coefficient and a relatively short time ofadjustment.
ELECTROMAGNETIC MEASUREMENTS
29-32 101
Abstract
The algorithm of indirect measurement of three-element nonresonance two-terminal networks based on analysis of transition process occurring in two-terminal network at harmonic voltage of fixed frequency supply was suggested. The calculation formulae for two-terminal networks parameters were obtained.
RADIO MEASUREMENTS
33-36 184
Abstract
The equation of measurement of two (three) antennas method based on the strict electrodynamic correlations and valid for any type of antenna was obtained.
ИЗМЕРЕНИЯ ИОНИЗИРУЮЩИХ ИЗЛУЧЕНИЙ
41-45 83
Abstract
The differences of frequencies of resonance of water and hydrogen protons for cylindrical samples with use of electromagnet (B = 2,142 T) and superconducting magnet (B = 11,747 T) were determined. For the difference of chemical shift of protons in water and in hydrogen was obtained: o(H2) - о(Н2О) = 596(2)10-9 at temperature 25 °С. At known from the literature: o(H2) = 26 288(2)10-9 for the same temperature the о(Н2О) = 25692 (3)10-9. That is different from the values о(Н2О) = 25694(14)10-9, represented in the lists of basic physical constants.
MEDICAL AND BIOLOGICAL MEASUREMENTS
45-49 97
Abstract
The new non-standard measuring instrument for biological cells and liquid media conductometry in pulse electric field with increasing intensity is developed. The metrological attestation of pulse conductometer according to actual normative documents of Russia and Ukraine is carried out. The certain results of developed conductometer application for measurement of cells and liquid media conductivity depending on pulse field intensity are shown.
PHYSICOCHEMICAL MEASUREMENTS
50-55 81
Abstract
The basic dynamic characteristics of measuring instruments exemplified on automatic photometric and refractometric analyzers are considered.
МЕТРОЛОГИЧЕСКАЯ СЛУЖБА
56-59 161
Abstract
The tasks of metrological services and measuring devices manufacturers in the conditions of modernization of Russian machine-building industry exemplitied by work of the Measuring Devices Engineering Center of the State Engineering Center and the Department of Measuring Information Systems and Technologies of MSTU «STANKIN» are considered. Recent projects are shortly characterized.
60-61 73
Abstract
The problems of calculation of measurement results error limits are considered.
64-68 78
Abstract
The direct and indirect methods of power loss measurement in electrical network elements are considered. The conclusion is made the relevance and suitability of loss calculation using the measurements results of current and voltage thermal pulse, performed on electricity supply meters. The algorithms of loss calculation based on data from counters of different manufacturers and the metrological characteristics of these instruments are presented.
68-71 53
Abstract
The problems of application of dangerous production objects¢ emergency protection subsystems functioning in the composition of information-measuring and control systems are considered.
ISSN 0368-1025 (Print)
ISSN 2949-5237 (Online)
ISSN 2949-5237 (Online)
