DEPARTMENT OF MEASUREMENT OF GEOMETRIC AND MECHANICAL QUANTITIES
The department has standard measuring instruments to ensure the unity and reliability of measurements and to transfer the dimensions of physical units from high-precision measuring instruments to working measuring instruments.
Taking into consideration the rapid restructuring of industry, the import of technologies, the opening of modern enterprises, the accuracy of measurements in production, the requirements for the quality of products, its competitiveness, the struggle for access to foreign markets is growing. Nowadays, the industry is equipped with high-precision measuring instruments to increase the accuracy of measurements and to provide production with working measuring instruments.
For this reason, the department conducts metrological certification of imported measuring instruments and assists in the development of normative documents used in enterprises.
The department consists of the laboratories “Measurement of geometric quantities”, “Measurement of forces of force and stiffness” and “Measurement of time and motion parameters” and “Measurement of small and large volumes”.
In the present time, the department is equipped with 27 high-precision sample measuring instruments and 87 sample measuring instruments, which provide for the national economy of the Republic to ensure the unity of measurements.
In order to develop metrological inspections in the Republic of Uzbekistan, the department is mastering new types of comparison of measuring instruments, improving its skills through independent study at SMSITI and international metrological institutes.
The activities of the department are accredited by the department for technical competence and independence in testing for compliance with the requirements of ISO/IEC 17025 for comparison, calibration, metrological certification and type approval of measuring instruments used in the field of state metrological inspection and control.
Laboratory of measuring geometric quantities
The laboratory is equipped with the following high-precision measuring instruments, in order to carry out work on the comparison of measuring instruments of geometric quantities: universal measuring instrument (barbell instrument, micrometric instrument, lever-toothed), bar-length measurements, angular measurements, boundary plane-parallel length measurements, optic-mechanic instruments. The Geometric measurement laboratory is equipped with 2-bit sample boundary length measurements, 2-bit barcode measurements, 2-bit sample scales, and optical-mechanical measuring instruments that allow lengths up to 100 mm to be measured with an accuracy of 0.0001 mm.
The laboratory is equipped with high-precision instruments capable of measuring quantities, digital calculations and digital printing (sampler, electronic surface plane meter “Micrad”, two-coordinate measuring device “DIP-1”).
The state comparison of instruments measuring lengths up to 100 mm is performed with an error of measurement from 0.02 µm to 0.40 µ, and instruments measuring lengths above 100 mm with an error of 0.11 µm to 0.55 µm (microns).
Also, since 2010, the laboratory has AUPNT auto-collimation equipment for comparison of geodetic instruments (levels, theodolites, taximeters and laser rangefinders).
In June 10, 2016, the laboratory was accredited to expand to compare geodetic GPS systems, the horizontal length measurement standard POLO, and the geodetic scanner.
In accordance with the Decree of the President of the Republic of Uzbekistan “On measures for further development of technical regulation, standardization, certification and metrology systems” PQ-4059 for the development of testing laboratories, the gradual replacement of measuring instruments with modern equipment, in January 2020 The GBCD-100A comparator for calibration and calibration of longitudinal measuring instruments was purchased from the Mitutoyo plant in Japan. This comparator has a measuring range from 0 to 100 mm and an extended uncertainty of 0.00001 mm. This comparator is automated and performs measurements by comparing flat parallel length gauges. It should be noted that the comparator has a number of advantages: it determines the accuracy class of flat parallel length measuring instruments, automatically calculates their errors by processing the measurement results, the required accuracy of the result, speed and convenience of the measurement process. Calibration and calibration work is being currently underway.
Laboratory of measuring strength and stiffness
The “Laboratory for Measuring Strength and Stiffness Quantities” is engaged in metrological testing of strength and stiffness measuring and testing instruments. This laboratory provides metrological monitoring of strength and stiffness measuring and testing equipment in use in the Republic.
The following measuring and testing tools are available under the accreditation of the Strength and Stiffness Measurement Laboratory:
– power generation and measuring machines and devices;
– all compression and elongation dynamometers and other types of force gauges;
– hydraulic presses, cutting machines, vehicle brake test equipment, other test equipment with force measuring system;
– digital and scale dynamometer switches, means of measuring and testing torque;
– Rockwell, Brinnel, Vickers, Shora stationary, portable universal hardness measuring instruments;
– measuring instruments and test instruments with other types of mechanical characteristics.
The Laboratory of Measurement of Strength and Stiffness maintains the “National Standard of Strength Unity” of the Republic of Uzbekistan. The national unit of power consists of a set of high-precision power generation standards with a power generation range of 50 kN and 1000 kN, as well as standard dynamometers with a measuring range of up to 2000 kN.
Laboratory of measuring time and motion quantities
The Laboratory for comparison of radar sensors for measuring the speed of multifunctional vehicles of the type MultaRadar CD and Traffistar SR290 has been established by the Uzbek national institute of metrology in cooperation with Atlas International of the Federal Republic of Germany. The laboratory was formed as part of the accredited laboratory “Comparison and calibration of time and motion magnitudes” of the Uzbek national institute of metrology. ATLAS International AG also guarantees a full range of “MultaRadar CD” and “Traffistar SR290” multi-lane vehicle speedometers installed under the project. Qualified specialists of “JENOPTIK Robot GmbH” organized online training courses and 4 employees improved their skills and were provided with special certificates. As well as, the laboratory also has the ability to compare the speedometer of Chris, Arena, Cordon-M, “AutoCon-SC/M”, “AutoCon-SC/S” and Hikvision vehicles using the IS-24/2 speed simulator.
In addition, the laboratory for measuring time and motion catalysts is equipped with standard measuring instruments used for comparison and calibration of various types of tachometers, stopwatches, speedometers and motor clocks UPS-4, UT-0.5-60, UPMS-1.
It is possible to provide metrological control in the field of time and movement measurement in the inspection and calibration of analog, electronic and digital tachographs of vehicles. This will save the lives and health of road users, ensure accurate and rational accounting of fuel consumption, as well as reduce the number of accidents.
Laboratory of measuring small and large volumes
The laboratory compares 1 and 2 discharge metal meters from 2 dm3 to 500 dm3. The standard and technical metal meters of enterprises and organizations from 2 dm3 to 50,000 dm3, as well as fuel distribution columns, liquefied gas filling columns are compared with the help of 1 and 2 discharge metal meters which available in our laboratory,.
Calibration of tanks from 3 m3 to 100 m3 is carried out in accordance with the normative document GOST 8.346-2000 by geometric and volumetric method of calibration of reference measuring instruments and tanks by means of electronic calculation software.
As well as, the laboratory consists of a sample scale of the standard from 0,2 m3 to 15m3, and the transport of food and oil products with a capacity of up to 60 m3 GOST 8.600-2011 and it is compared in accordance with the normative document of “GSI in the volumetric way of the autosisterns. Tank trucks for liquid petroleum products. Calibration method”.
In June 2020, in accordance with the requirements of UzDSt ISO / IES 17025: 2019, the scope of accreditation in the laboratory was expanded EURAMET Calibration Guide №19 Version 3.0 (09/2018). In accordance with the international document “Guidelines for the determination of undefined calibration by gravimetric methods” for the calibration of glass, measuring instruments, cylinders, pipettes, burettes, pycnometers with A and V precision measuring range of 0.5 mL to 2000 mL.