Shakhov E. K., Ashanin V. N. Functions partition: the basic principle of instrumentation improvement

The paper shows that the improvement of measuring transducers structures follow the path of partition between various elements and creating optimal conditions for solving the assigned key conversion task by each element. The functions partition principle enables the consideration of conversion processes in any measuring transducer structures independent on its classification membership from a generic methodological viewpoint. The paper is illustrated with the examples of measuring transducers with functions partition in space and time.

Korpusov O. V., Svintsov I. V., Lipchansky A. A., Svintsov V. Ya. A mathematical model of the electric field of multielectrode conductometric cell

The paper presents the results of mathematical model development and investigation for the electric field of a multielectrode sensor whose sensing elements are both the measuring electrodes and the protecting electrodes located symmetrically relative to the measuring ones.

Kondratov V. T., Red’ko V. V. Digital dc meter with structurally redundant fiber-optic sensor

A digital dc meter with automatic systematic inaccuracy correction is described. The meter employs magneto-optoelectronic technique of redundant measurements using a structurally-redundant fiber-optic sensor.

Kosinsky A. V., Potomsky S. Yu., Kholomonov A. A. Single- modulator differential optoelectronic displacement transducer

Structure and operation principle of a single-modulator differential optoelectronic displacement transducer is considered. Additional elements introduced into the transducer compensate more effectively for the signal’s dc component and the error arising due to the instability of photodetector’s dark voltage. The differential transducer typically has higher conversion accuracy.

Basyrov V. S. Bellows, their calculation and application

The paper discusses the methodology of stresses and deformations calculation and the problems of performance characteristics calculation in bellows-type resilient sensing elements design.

Petrova I.Yu., Kiselyov A. A. Parametric structural diagrams synthesis for polarization optical sensors

Structural representation and design procedure for the sensors operating on the basis of polarization optical effects are discussed.

Nikonenko V. A. Metrological assurance of temperature measurements in the –190…1600°C range

The paper informs about standard instruments developed and manufactured by Etalon Scientific and Production Company for thermometric devices calibration including a family of thermostats and heaters. The latter are not inferior to any foreign analogs and comply with National Calibration Scheme (NCS). The equipment ensures integrated temperature unit traceability solution in accordance with NCS for measuring instruments operating in –190…1600°C temperature range

Vorobey R. I., Gusev O. K., Kireenko V. P., Svistun A. I., et al. Photoelectrical null detectors for data transmission systems

To increase data transfer rate through an optical channel, the paper proposes to use additional wavelength coding with subsequent information detection using photoelectrical semiconductor null detectors. A set of photoelectrical null detectors for wavelength modulated optical information in wavelength range 0.3…1.8 μm is developed.

Gorsky E. V., Livshitz A. M. PAPUAS-4IM Portable emission spectrometer for alloys analysis

PAPUAS-4IM is a new emission spectrometer developed by Spectropribor Public JSC for metal alloys analysis. The paper describes its operation principle end presents its metrological and operational characteristics. Measurement results are shown by the examples of aluminum and copper alloys.

Dmitriev V. A., Raspopov V. Ya., Ivanov Yu. V., Alaluev R. V. Heaving sensors

The features of inertial technique application for heaving measurements are examined. The paper analyzes the components of heaving sensors hardware compatible with different hydrographic echo-sounders. Various heaving measurement system designs are included.

Malyutin D. M., Pogorelov M. G. The investigation of accelerometer temperature error’s effect on the accuracy of shaftless magnetic-type navigation system

The influence of accelerometers’ temperature error on the accuracy of shaftless magnetic-type navigation system is investigated. The relationships are presented that allow to conclude about the possibility of applying specific accelerometer types as part of a shaftless portable magnetic-type navigation system subject to their temperature error and the desirable accuracy of azimuth angle measurement. The opportunity of azimuth angle measurement error reduction are discussed.

Rodionov V. I. Controlled hyperstabilizers development experience

State of the art in the theory and practice of controlled gyroscopic hyperstabilizers development at the Control Instruments Section of Tula State University is discussed. The methods of mathematical formulation of kinematic and dynamic errors, accuracy improvement techniques, and error detection procedures for stabilization and tracking modes are described.

Dmitriev V. A., Raspopov V. Ya., Ivanov Yu. V., Alaluev R. V. Physical pendulum-based level sensor for rail track machines

Various pendulum-based level sensor structures for automatic track alignment systems of rail track machines are analyzed. Comparative results of IN-3 level sensor experimental investigation with optoelectronic angle-to-voltage converter are included.

Malyutin D. M. The improvement for gravimetric complex’s stabilizing system

Basic problems solved during the development of the stabilizing system of GRIN small-size gravimetric complex for marine measurements. The complex’s performance attributes justified by full-scale test results are adduced. The improvement areas of marine gravimeter stabilizing system are outlined.

Nikolaev I.N., Litvinov A. V., Yemelin E. V. A model of MIS sensors sensitivity mechanism to gas concentration

A model of MIS sensors sensitivity to gas concentration is proposed. According to the model, the sensitivity occurs owing to the capture of gas molecules with electric dipole moments by polar traps located in the metal-insulator interface area. The model fairly reflects the available experimental data and outlines the ways to overcome problems that hamper MIS sensors application as gas analyzer sensing elements.