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- designed to measure the level of filling of light petroleum products in railway tanks - allows measurements to be carried out without opening the tank without removing the composition from under the contact wire - has small dimensions and weight - powered by a built-in accumulator - allows to convert the filling height to volume for extended types of tanks - easy to maintain

The spectrometer is designed to measure the intensities of analytical lines of chemical elements and, by recalculating them, determine the mass concentration of elements from P(15) to U(92) contained in the analyzed sample. The process of analysis from a set of data and their processing to obtaining results in the form of a table of concentrations of the elements being determined is automated and performed using a personal computer. The spectrometer can be used in various fields of science and technology (ecology, biology, medicine, agriculture, food industry, geology, mining, geophysics, sanitary and epidemiological control, etc.).

The MS-1104E spectrometer is characterized by high performance and accuracy of Mössbauer measurements achieved through the use of “compressed” geometry, as well as the use of highly efficient and selective resonant scintillation detection units that improve the energy resolution of resonance absorption lines by up to 30%. The technique of software and hardware stabilization of the spectrometric path developed and used in the spectrometer allows for long-term Mossbauer measurements without manual adjustment. The method of modulation in the specified speed intervals can significantly increase the sensitivity and expressiveness of measurements and reduce the time to determine the magnitude of the effects of resonant absorption by tens of times in the study of temperature phase transitions with a low concentration of resonant elements. The electronic components of the spectrometer are developed on the basis of a modern element base using programmable logic matrices and microprocessors. Adjustable spectrometric paths and high-voltage power supplies of the PMU are integrated into detection units, modulator driver modules and multi-channel storage are made in the ISA standard and are located in the processor unit of the computer. Setting and monitoring of all parameters of the spectrometer and processing of the measured spectra is carried out from the operating windows of the control and processing programs. Since 2000, more than ten spectrometers of this type have been supplied to leading scientific organizations in Russia and neighboring countries. One of the few industrial applications of Mössbauer spectroscopy should be noted - the development and supply to the Volgodonsk NPP of certified MS-1104Em methods and spectrometer for monitoring corrosion processes in the heat exchange circuits of the VVER-1000 reactor.

The advantage of the system using a closed-cycle helium cooling unit from Helix Technology Corporation (USA) is the ability to provide low measurement temperatures (up to 10 K) without loss of consumables (helium) with a compact arrangement of equipment. Isolation of the studied absorber from vibration associated with the operation of the compressor is ensured by ensuring heat exchange of the absorber with the cooling head of the unit through an intermediate layer of helium gas and by careful vibration isolation of the systems of the Mossbauer spectrometer, minimizing additional broadening of the spectrum lines during operation of the cooling unit. All modes and characteristics of the MS-1104Em Mossbauer spectrometer are preserved at the same time.

The height of the optical axis of the furnace above the surface of the spectrometer table is 55 mm, the diameter of the samples is up to 21 mm, the length of the furnace in the direction of the optical axis is not more than 70 mm. The sample is installed in a screw-up cassette and is thermally insulated from the external environment by two screens on each side made of mylar and thin aluminum foil or graphlex. The total absorption of 14.4 keV radiation by the screens does not exceed 10-15%. The furnace is attached to the MS-1104Em spectrometer plate with non-falling screws and, if necessary (for example, when using a camera for recording conversion electrons or other equipment), it is easily removed and installed back. The folding mounting of the furnace allows for rapid replacement of samples without waiting for it to cool down, to perform operational calibration of the spectrometer without removing the furnace, and to measure the Mossbauer spectra of absorbers at room temperature outside it in geometry with a moving source or absorber, including in "compressed" geometry and using resonance detectors.

The proposed measuring and diagnostic complex is designed to: - provide monitoring of the technical condition of electric drive valves of nuclear power plants; – detection and identification of malfunctions of components and equipment of electric drive valves at an early stage of their occurrence; – issuance of measurement results and diagnostics of electric drive valves to the operational personnel of the station.