Description
Testing Center VNISI
In 1951, our institute carried out measurements and tests of lamps and lamps (light sources), including in the field of photometric and colorimetric measurements, lighting metrology, tests to check the durability and strength of products to the effects of external climatic and mechanical factors. Currently, the structure of the VNISI Testing Center includes a spectrophotometric laboratory, a testing and testing station and a group of metrology and quality management.
Our test center has modern photometric equipment, various stands and chambers for climatic and mechanical tests, it is accredited in the GOST R, TR CU 004/2011 (Customs Union) system and in the VOENELECTRONSERT voluntary certification system. The test center carries out light measurements and tests for lighting devices and light sources for civil and special purposes. The equipment on which tests and measurements are carried out is tested annually at FGU ROSTEST and VNIIOFI. Verification certificates and calibration certificates for equipment can be provided to the customer upon special request.
Our Testing Center employs highly qualified specialists with higher lighting education in the field of photometry, light sources, lighting design.
Price list for climatic, mechanical tests and photometry
To order photometric measurements and tests of a lamp or a light source, it is enough to send us a completed application form for conducting light tests or climatic and mechanical tests by fax at +7 (495) 788-32-96 or by e-mail belyaev@vnisi.ru. Any questions, you can contact our specialist by phone +7 (495) 682-17-01.
Photometric and colorimetric measurements
In the spectrophotometric laboratory of the IC VNISI laboratory there is a variety of equipment and measuring instruments that allow a wide range of photometric, electrical and spectrocolorimetric measurements. The laboratory has a dark room, photometric spheres with a diameter of 1.5 and 2.0 meters, a photometric bench, two types of goniophotometers, SIS and SIP photometric lamps, stabilized AC and DC voltage sources, various measuring instruments and instruments (spectroradiometers, lux meters and heart rate monitors, digital camera-meter, thermal imager, high-precision multimeters, wattmeters.
In November 2009, a new high-precision goniophotometer RIGO-801 manufactured by Techno Team (Germany) was put into operation and put into operation, which is a modern measuring complex, which made it possible to move to a qualitatively new level of lighting measurements. Goniophotometer RIGO-801 is designed for accurate photometric measurements of the luminous flux and light intensity curves of light devices up to 1.8 meters in size in the automatic mode. The measurement error of the luminous flux is no more than 5%, the luminous intensity is no more than 6%, the goniphotometer is entered in the State Register of Measuring Instruments. The principle of operation of a goniophotometer for measuring the intensity of light is based on photometry in the near field, that is, measuring the spatial distribution of the brightness of a light instrument with the subsequent processing of this data. Measurements are carried out using a special digital camera-brightness meter based on a CCD matrix and a special electro-mechanical scanning system that allows the camera to rotate around the measured lamp in the horizontal and vertical planes in steps of 2.5 ° (standard value) to 0.1 °. In the process of rotation, the camera-brightness meter makes a series of shots containing brightness images of the measured lamp. The entire measurement process is automated and controlled from a computer using special software. The parameters and measurement results (a series of brightness images) are recorded on the hard disk of a computer and, after being processed by a computer program, can be represented as a spatial photometric body in the coordinate system (C, γ), which gives a very visual idea of the characteristics of light distribution light fixture. Sections of a spatial photometric body with C planes form a set of IC light intensity curves (γ) in the coordinate system (C, γ), which can be presented in tabular or graphical form, and also as an electronic file in IES format, which is widely used in computer-aided design. and calculations of various lighting installations. Thus, engineers and designers of lighting installations are able to use in computer design and calculations the actual lighting data of interest to their lighting devices. An important feature of measurements on a gonio photometer is the possibility of measuring the light device in a stationary state and in its working position. This poses
It avoids avoiding measurement errors peculiar to some goniophotometers with a luminaire rotating in the course of measurements, which often leads to changes in the thermal regime of the lamp and the source (s) of light and disturbance of the stability of the photometric characteristics of the lamp being measured. In addition to the photometric body and light intensity curves, the measurement result is the value of the luminous flux in the steady state, as well as the luminescence curve of the luminaire - the change in the luminous flux value for a period from turning on the luminaire until the luminaire exits to a stable steady state (Fig.9). In the case of LED luminaires, the magnitude of the decay of the luminous flux during the ignition time makes it possible to indirectly judge the temperature regime of the lamp. Therefore, the determination of the period of ignition of the lamp, as well as the measurement of the change in luminous flux during this period are important parameters that affect the accuracy of measurements, and allow you to proceed to photometric measurements only when the required stability parameters are reached.
Using a modern spectroradiometer, the laboratory of spectrophotometric and electrical measurements of the VCII Research Center conducts measurements of the emission spectra in the visible region 380-780 nm, color coordinates and emission chromaticity, color temperature and color rendering index of light devices and light sources. For convenience of perception and analysis of the results, a series of measurements (emission spectrum, chromaticity coordinates) is provided to the customer not only in the form of digital data, but also in graphic form. In the process of measuring photometric and colorimetric characteristics, electrical parameters of a light device or a light source are monitored and measured: the supply voltage, the electric current consumed by the light device and power, and the power factor.
Photometric and spectrocolorimetric measurements are carried out in accordance with the requirements for lighting devices and test methods set out in GOST 54350-2015, GOST R IEC 60598-1-2011, as well as for compliance with the specifications and product passport. If necessary, tests are carried out under non-standard operating conditions of the light device, for example, at increased or decreased supply voltage, at elevated or reduced temperatures, and humidity. Most of these measurements are carried out at the control and testing station, which is part of the EC VNISI.
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Measurements and tests of lighting products, carried out in the IC VNISI, are complex for lighting products of a wide range of applications. The measurement results obtained during the tests are recorded in the measurement protocols, which are the main documents issued by the laboratory of spectrophotometric and electrical measurements and the control and test station. Based on the comprehensive testing protocols of the Testing Center, the specialized laboratories of VNISI, at the request of the Customer, can evaluate the technical level of the tested product with the issuance of a relevant conclusion, as well as issue a conclusion on the compliance of the tested product with the requirements of regulatory documents (GOST, TU and product passport).
The objectivity and accuracy of measurements carried out at the IC VNISI are confirmed by the results of international comparisons.
So, in 2013-2014. IC VNISI successfully took part in large-scale international interlaboratory comparisons IC 2013, held under the auspices of the International Energy Agency (IEA). 110 laboratories from 19 countries took part in these comparisons, including testing centers and laboratories of such world-famous companies as NIST (USA), VSL (Netherlands), CREE (USA), General Electric (USA), Hitachi (Japan), Toshiba (Japan), Panasonic (Japan), OSRAM (Germany), Philips (Netherlands), Osram Sylvania (USA) and many others. For CI VNISI these comparative measurements were successful and useful, they allowed to assess the level of measurements of VCISI CI relative to the level of world laboratories, to outline measures for further improving accuracy and improving the quality of measurements. So, when measuring the luminous flux of the tested samples at the All-Russia Central Research Institute of Information Technology, deviations from the “true values” were from 1.7 to 3.4% - this is a very good result. In the magazine "Lighting" number 5 for 2015. a detailed article was published on these comparisons and on participation of the VNISI Center in them. At present, the report and the results of comparisons can be found on the IEA website (in English).
