Relevant bibliographies by topics / Electric meters Calibration

Academic literature on the topic 'Electric meters Calibration'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Electric meters Calibration"

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Olencki, Andrzej, and Piotr Mróz. "Testing Of Energy Meters Under Three-Phase Determined And Random Nonsinusoidal Conditions." Metrology and Measurement Systems 21, no. 2 (June 1, 2014): 217–32. http://dx.doi.org/10.2478/mms-2014-0019.

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Abstract Electric energy meters are designed to account energy under sinusoidal and nonsinusoidal conditions, because both, old and new standards for energy meters require testing their accuracy under different conditions. The latest EN 50470 standard increases the range of meter testing under nonsinusoidal conditions, introducing new shapes of test signals such as the phase fired waveform or the burst fired waveform. This paper discusses calibration problems of electronic revenue energy meters for direct connection and for connection through current transformers, and it proposes a new calibration procedure which reproduces normal operating conditions better: three-phase configurations of measurement systems, load range during meter testing or shapes of test signals. Recently, modern Electrical Power Standards, also known as Power Calibrators, enable automatic testing of various types of electrical devices, including electricity meters in their normal operating conditions. This article presents examples of single and multi position fully automatic test systems, which employ Power/Energy Calibrator from Poland as the precision source with programmed waveforms of three phase voltages up to 560 V and currents up to 120 A conforming to EN 50470, or with random waveforms generated by PC software random wave generator. Measurement uncertainty of the energy meters under different nonsinusoidal conditions using a test system with reference to accuracy of the power calibrator or to the reference meter, are discussed. Comparative analysis of test results for different shapes of voltage and current signals is presented in the conclusions of this paper.
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Zhou, Wei Wei, Ji Ye Huang, Ming Yu Gao, Zhi Wei He, and Bu Sen Cai. "Design and Realization of CAN-Based Main Control System of Multi-Station Meter Testing Equipment." Applied Mechanics and Materials 719-720 (January 2015): 411–16. http://dx.doi.org/10.4028/www.scientific.net/amm.719-720.411.

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In this paper, 0.05 grade three-phase main control system of multi-station meter testing equipment (MTE) is presented. This design is based on the S3C2440 core board as the control core, and the software is based on Windows CE(WINCE) embedded operating system. The device is displayed and controlled by 7-inch Touch Screen. The main control system communicate with the error instrument and PC through Controller Area Network (CAN) bus, and the largest number of error instruments can connect to CAN bus is 100. The main control system communicates through RS232 bus with three-phase signal source and standard electric energy meter, through RS485 bus with programmable power amplifier. In this device, calibration of energy meters can not only through the PC software, but also use the main control system. Compared to the traditional design of the electric energy meter calibration device, the design’s the man-machine interface is more optimized, the number of electric energy meters can be test in the same time is more, faster communication, stronger anti-interference ability, and calibration is more efficiency.
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Xu, Zi Li, Tie Jie Wang, Min Lei, Jun Zhang, and Kai Zhu. "Research on Verification Device of DC Electrical Energy Meter for Electric Vehicle Charger." Advanced Materials Research 588-589 (November 2012): 651–54. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.651.

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With the increasing demands of electric vehicles, many DC electrical energy meters for vehicle battery charger appear. In this paper, a verification device of DC electrical energy meter is developed that base on real-time pulse period compare method, which used PCI-6281 for data acquisition, used LabVIEW for data processing and human-computer interface. This article describes the working principle of the verification device and core technology. The practical application verify the device can use for calibration of DC electrical energy meter efficiently.
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Kepeshchuk, T. V. "DETERMINATION OF THE METROLOGICAL CHARACTERISTICS OF PIPE PROVERS BASED ON THE CONCEPT OF UNCERTAINTY." METHODS AND DEVICES OF QUALITY CONTROL, no. 2(47) (December 29, 2021): 34–45. http://dx.doi.org/10.31471/1993-9981-2021-2(47)-34-45.

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In this paper noted that oil metering units are used to determine the amount of crude oil. The metering units of crude oil that implement the method of dynamic measurements, the amount of oil is determined by the readings of oil meters (turbine or mass flow meters). Such flow rate transducers (flow meters) are subject to verification during operation. The main reference means used for the calibration of flow transducers are pipe provers (TPP). Calibration of such reference units can be performed using reference meters (compact-prover), reference balance and using a reference pipe prover with a comparator. The methods of calibration pipe provers with the use of reference meters (standard volume measure), as well as a reference compact-prover with a comparator have been developed. These methods of calibration approbation during the calibration of reference pipe prover installations operated at the facilities of JSC "Ukrtransnafta". The method is considered, and also the structural scheme of calibration of TPP by means of the reference compact prover with the comparator is resulted. A mathematical model is developed taking into account the influential factors and algorithms for their evaluation, as well as the metrological characteristics of TPP are determined - the uncertainty budget is formed and the uncertainty of measuring the capacity of the pipe prover calibration unit is estimated. According to the results of calibration of TPP BHP -1100 company "VEGYEPSZER", Hungary, operated in the Branch "PDMN" JSC "Ukrtransnafta" (Kremenchuk) using the reference Compact Prover company Brooks Insntrument Division Emerson Electric Co., USA comparator - turbine flow meter Smith Meter series MVTM, USA, the relative extended uncertainty of TPP capacity measurement was 0,03%. The main contributions to the extended measurement uncertainty during TPP calibration were the standard uncertainties due to the influence of liquid volume expansion (liquid temperature measurement) in TPP and compact-prover, the standard uncertainty of the reference compact-prover and the experimental standard uncertainty of pipe prover capacitance measurement result's mean value.
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Pang, Yan Jun, Qing Hao Wang, Xiao Tong Tong, Kai Zhi Wang, Ying Ying Yang, Chang Xin Ge, Ren Liu, Ning Zhang, Qiu Ling Zhang, and Bo Zhu. "The Modification of Electric Metering Seal Label with Barcode." Applied Mechanics and Materials 543-547 (March 2014): 4456–59. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.4456.

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In recent years, with the improvement of the watt-hour meters calibration work and the demand of modern management, mechanical seal labels have many problems exposed in the process of use. Through the actual work summary of experience for many years, it is concluded that there must be a new type of seal to replace the original one, which is using the advanced computer management method to manage seal. This article in detail introduces the structure, characteristics and application of the electric energy metering seal and its development prospect. The paper expounds the bar code application technology in the role of watt-hour meter calibration work and points out the necessity to adopt modern management on seal work by using computer management
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Puzovic, Slavisa, Branko Koprivica, Alenka Milovanovic, and Milic Djekic. "Analysis of measurement error in direct and transformer-operated measurement systems for electric energy and maximum power measurement." Facta universitatis - series: Electronics and Energetics 27, no. 3 (2014): 389–98. http://dx.doi.org/10.2298/fuee1403389p.

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Analysis of error in measuring electric energy and maximum power within direct and half-indirect measurement system at the voltage of 0.4kV is presented in the paper. The analysis involved all the elements of the measurement system, i.e. calibration and testing of the transformer-operated and direct digital energy meters and measuring current transformers. This equipment was also used for measurements in the transformer substation aiming at error analysis at measurements made under the real conditions. The results obtained show significant negative measurement error introduced by the energy meters under overload conditions. Energy meters have lower values of both the consumed electric energy and maximum power in this operating mode, which can be interpreted as a loss.
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Deng, Siyang, Kaiming Chen, Yonggui Wang, and Lvchao Huang. "Piecewise and Nonlinear Power Compensation Model for Gateway Meters in Substations." Journal of Physics: Conference Series 2355, no. 1 (October 1, 2022): 012048. http://dx.doi.org/10.1088/1742-6596/2355/1/012048.

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Abstract In order to measure the electric energy and monitor the power quality in substations with accuracy, higher precisions are required for the gateway meters. Due to the wide dynamic range of the current and the nonlinearity of the compensation models, the calibration becomes complicated to guaranteeing the accuracy over the full range. For the purpose of decreasing the complexity of calibration, a piecewise and nonlinear compensation model is presented in this paper. With this model, all the values needed could be calibrated within two calibration points and the accuracy could achieve the requirements of precision over the full range. Results shows the efficiency of this method.
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Mhango, L. M. C., and R. Perryman. "Innovative high-speed machines with active magnetic bearings for special submerged gas processing." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 216, no. 2 (February 1, 2002): 183–97. http://dx.doi.org/10.1243/0954406021525124.

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The combination of advances in active magnetic bearings, recent developments in power electronics technology, new design techniques of electrical machines and advances in magnetic materials is contributing to innovative forms of submerged high-speed electric drives which will be suitable for special gas processing applications well into the twenty-first century. Typical applications include submerged industrial high-pressure and high-temperature gas processes, calibration of gas meters, gas circulation in nuclear power plants, etc. This paper looks at the results of case studies of high-speed drives and discusses their benefits and advantages.
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Bottauscio, O., M. Chiampi, G. Crotti, and L. Zilberti. "Perturbing effects of the probe support on the calibration of electric field meters." European Physical Journal Applied Physics 49, no. 3 (February 16, 2010): 31601. http://dx.doi.org/10.1051/epjap/2010017.

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Bottauscio, O., M. Chiampi, G. Crotti, and L. Zilberti. "Perturbing effects of the probe support on the calibration of electric field meters." European Physical Journal Applied Physics 42, no. 3 (April 30, 2008): 345–50. http://dx.doi.org/10.1051/epjap:2008065.

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Dissertations / Theses on the topic "Electric meters Calibration"

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Crowther, Blake Glenn 1965. "The design, construction, and calibration of a spectral diffuse/global irradiance meter." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/288767.

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Vicarious calibration methods have been developed to calibrate radiometric sensors in-flight. One such method, the irradiance-based method, requires the measurement of the diffuse-to-global (diffuse-to-total) irradiance ratio. Diffuse/global irradiance measurements may also be used to deduce atmospheric descriptors and provide a comparison with atmospheric modeling predictions. I describe the design, construction, calibration, and application of a spectral diffuse/global irradiance meter that can accomplish these objectives in this dissertation. I develop general integrating sphere theory, modeling methods, and describe the resultant computer model. The model results agreed with theory to better than 1% for a simple unbaffled integrating sphere. I applied the model to design an interior baffled integrating sphere-based cosine collector. I developed a method of tolerating the thermal expansion of Spectralon® and the collector was constructed. Measurements of the collector angular response agreed with the model predictions to better than 4% for input zenith angles from 0° to 70°. The resulting instrument is automated and collects diffuse and global irradiance from 300 nm to 1100 nm. It has a nominal 12 nm full-width at half-maximum bandpass and has a minimum sampling interval of 1 nm. I estimate the uncertainty of the measurements to be 3.2%. The largest contributor to the total uncertainty is the measurement uncertainty of the diffuse irradiance at 2.5%. The instrument was used in a field experiment. Optical depths derived from the diffuse/global irradiance measurements agreed with those derived from a solar radiometer to within 0.008. Diffuse-to-global irradiance measurements made by the instrument were compared with an independent method and found to generally agree within 6%. The measurements were consistently lower than radiative transfer modeling estimates. Top of the atmosphere relative radiances computed from the two independent diffuse-to-global irradiance data sets generally agreed to better than the 2.9% uncertainty associated with the diffuse/global irradiance meter data set. The relative radiances of the diffuse/global data set collected with the instrument were within the 4.9% uncertainty estimate of the reflectance-based method.
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Books on the topic "Electric meters Calibration"

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Thompson, Lawrence M. Electrical measurements and calibration: Fundamentals and applications. 2nd ed. Research Triangle Park, N.C: Instrument Society of America, 1994.

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Chang, Y. May. Error analysis and calibration uncertainty of capacitance standards at NIST. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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Chang, Y. May. NIST measurement assurance program for capacitance standards at 1 kHz. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1996.

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Baxter, Larry K. Capacitive sensors: Design and applications. New York: IEEE Press, 1997.

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Precision measurement and calibration, electricity: Selected papers on the realization and maintenance of the fundamental electrical units and related topics. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1985.

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Capacitive Sensors: Design and Applications (Ieee Press Series on Electronics Technology). Institute of Electrical & Electronics Enginee, 1996.

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Capacitive Sensors: Design and Applications (IEEE Press Series on Electronics Technology). Wiley-IEEE Press, 1996.

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Book chapters on the topic "Electric meters Calibration"

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Rüeger, J. M. "Calibration of Electro-Optical Distance Meters." In Electronic Distance Measurement, 186–221. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80233-1_13.

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Rüeger, J. M. "Calibration of Electro-Optical Distance Meters." In Electronic Distance Measurement, 186–221. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-97196-9_13.

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Sun, Ying, Zhipeng Su, Qiong Wu, Feiou Yu, Ying Zhao, and Enzhen Hou. "Clock Synchronization Methods of Electric Meters Based on Wireless Communication." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220015.

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Aiming at the inaccurate clock calibration of electric meters and the shortcomings of traditional clock synchronization methods, this article briefly summarizes the reasons of inaccurate meter clocks, and proposes a method of electric meter clock calibration based on wireless communication, which solves the problem of meter clock synchronization accuracy. It is verified by field test. The test results show that the error of electric meters clock after clock calibration can be controlled at the second level. And the data error of collected import active electrical energy is smaller, which meets the requirements of real-time analysis of electricity spot trading and other businesses, providing more accurate data to ensure the results reliability.
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Hibbert, D. Brynn, and J. Justin Gooding. "Calibration." In Data Analysis for Chemistry. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780195162103.003.0010.

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• To describe the linear calibration model and how to estimate uncertainties in the calibration parameters and test concentrations determined from the model. • To show how to perform calibration calculations using Excel. • To calculate parameters and uncertainties in the standard addition method. • To calculate detection limits from measurements of blanks and uncertainties of the calibration model.… Calibration is at the heart of chemical analysis, and is the process by which the response of an instrument (in metrology called ‘‘indication of the measuring instrument’’) is related to the value of the measurand, in chemistry often the concentration of the analyte. Without proper calibration of instruments measurement results are not traceable, and not even correct. Scales in supermarkets are periodically calibrated to ensure they indicate the correct mass. Petrol pumps and gas and electric meters all must be calibrated and recalibrated at appropriate times. A typical example in analytical chemistry is the calibration of a GC (gas chromatography) analysis. The heights of GC peaks are measured as a function of the concentration of the analyte in a series of standard solutions (‘‘calibration solutions’’) and a linear equation fitted to the data. Before the advent of computers, a graph would be plotted by hand and used for calibration and subsequent measurement. Having drawn the best straight line through the points, the unknown test solution would be measured and the peak height read across to the calibration line then down on to the x-axis to give the concentration (figure 5.1). Nowadays, the regression equation is computed from the calibration data and then inverted to give the concentration of the test solution. Although the graph is no longer necessary to determine the parameters of the calibration equation, it is good practice to plot the graph as a rapid visual check for outliers or curvature. Because we can choose what values the calibration concentrations will take, the concentration is the independent variable, with the instrumental output being the dependent variable (because the output of the instrument depends on the concentration).
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Papčová, M., and J. Papčo. "Aspects of establishing calibration baselines for electronic distance meters – site selection and configuration of baseline points." In Advances and Trends in Geodesy, Cartography and Geoinformatics II, 50–56. CRC Press, 2020. http://dx.doi.org/10.1201/9780429327025-9.

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Papčová, M., and J. Papčo. "Aspects of establishing calibration baselines for electronic distance meters – position and height design, point monumentation and metrology measurement." In Advances and Trends in Geodesy, Cartography and Geoinformatics II, 57–63. CRC Press, 2020. http://dx.doi.org/10.1201/9780429327025-10.

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"than its original energy. The ejected electron (Compton electron) has enough kinetic energy to cause excitations and ionizations in the absorber atoms. It thus interacts with the absorber in the same way as the ejected secondary electrons produced by an electron accelerator beam (Fig. 12b). Because Compton electrons are produced when gamma or x-ray photons interact with a medium, and because the Compton electrons cause ionizations and excitations in the same way as secondary electrons produced by accelerator beam electrons, the radiation-induced chemical changes in the irradiated medium are largely the same, regardless of the type of radiation used. The purpose of dose meters is to measure the amount of radiation energy absorbed by the irradiated product. The instrument that gives a reading of absorbed dose directly is the calorimeter. It measures the total energy dissipated or the rate of energy dissipation in a material in terms of the thermal properties of the absorbing body. This instrument, therefore, is considered to be an absolute dose meter that can be used for calibrating other dose meters. The principle of radiation calorime­ try is implicit in the definition of the radiation dose unit 1 Gy (gray) = 1 J (joule)/ kg. Ideally the temperature elevation should be measured in the irradiated food product itself— but in practice this is usually not done because the thermal properties of foodstuffs vary widely. A substance with known, reproducible thermal properties is taken instead, which serves as a heat-sensing calorimetric body, included in an adiabatic system (adiabatic = without transmission of heat). Water, graphite, aluminum, or a water-equivalent plastic is usually chosen, and the thermal change is determined by small calibrated thermocouples or thermis­ tors embedded in the calorimetric body. The practice of using radiation calorimetry is not simple, and ways to use it in a routine fashion have been developed only recently (24,25). Because the process of temperature elevation should run under adiabatic or quasi-adiabatic conditions, the dose has to be applied in a very short time. Calorimetry is therefore mostly used for measuring electron accelerator beam doses. The absorbed dose in the calorimetric body can be converted to that of the material of interest (foodstuff) by taking into consideration the different density and the different energy absorp­ tion coefficients of the two materials. The temperature elevation depends on radiation dose and on the specific heat of the material irradiated. A dose of 10 kGy causes a temperature elevation as follows: 2.3K in water (specific heat 4.2 kJ/kg • K) 6.2K in dry protein (specific heat 1.6 kJ/kg • K) 7.1K in dry carbohydrate (specific heat 1.4 kJ/kg • K) 12.5 K in glass (specific heat 0.8 kJ/kg • K)." In Safety of Irradiated Foods, 49. CRC Press, 1995. http://dx.doi.org/10.1201/9781482273168-38.

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"into account. Therefore, every time a new batch of food is to be irradiated, the operator must establish the dose and dose distribution by strategically placing dose meters into and between the food packages and evaluating the dose meter reading. Once the process is running smoothly, it is usually not necessary to carry out dosimetry on all the product. Monitoring the process parameters and making occasional dosimetric checks is now sufficient (23). In most countries government regulations require that food irradiation proces­ sors maintain records that describe for each food lot the radiation source, source calibration, dosimetry, dose distribution in the product, and certain other process parameters (see Chapter 11). A short introduction to the interaction of ionizing radiation with matter is appro­ priate at this point, although the effects of ionizing radiation on food components will be described in more detail in Chapter 3. When high-energy electrons are absorbed by a medium they lose their kinetic energy by interacting with electrons of the medium. (At very high energy, far above that allowed for food irradiation, accelerated electrons can also interact with nuclei of the medium.) The interaction with orbital electrons of the atoms of the medium (the absorber) causes ionizations and excitations. Ionization means that orbital electrons are ejected from atoms of the medium; excitation means that orbital electrons move to an orbit of higher energy. Ejected electrons (secondary electrons), carrying a large portion of the energy of the incident electron, also lose energy through interaction with orbital electrons of the absorber. Electrons at low velocities (subexcitation energy level) can cause molecular vibrations on their way to becoming thermalized. As a result of the collisions with atoms of the absorber material the incident electrons can change direction. Repeated collisions cause multiple changes of direction. The result is a scattering of electrons in all directions. This is shown schematically in Figure 12a. When gamma or x-ray photons interact with the absorber, three types of interaction can occur: The photoelectric effect The Compton effect, and Pair production (i.e., formation of pairs of electrons and positrons) Photoelectric absorption occurs largely with photons of energies below 0.1 MeV and pair production primarily with photons of energies above 10 MeV. Both are of minor importance in food irradiation, where the Compton effect predominates. As portrayed in Figure 13, in the Compton effect an incident photon interacts with an absorber atom in such a way that an orbital electron is ejected. The incident photon continues after the collision in a changed direction and with less." In Safety of Irradiated Foods, 47–48. CRC Press, 1995. http://dx.doi.org/10.1201/9781482273168-37.

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Conference papers on the topic "Electric meters Calibration"

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Lee, Tsung-Ping. "More Efficient Solving Calibration Issues by Automated and Semi-Automated Calibration Systems." In NCSL International Workshop & Symposium. NCSL International, 2018. http://dx.doi.org/10.51843/wsproceedings.2018.41.

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From year 2015, owing to National Space Organization (here shorted by NSPO) internal a great quantity of requirements for instruments calibration, automated and semi-automated calibration systems started to build up, writing by computer programs C# to control and retrieve data from varies instruments and modules, in brand of instruments for example: Agilent, FLUKE, HP ,Keithley, Keysight, National Instruments and Tektronix. In order to solve issues of automatically generating uncertainties and calibration reports, templates using Microsoft Word according to the characteristics of the instrument have been classified and created. It benefits in calibration efficiency and precision because data retrieving and calibration reports can be created only one button. At the same time, calibration records can be found including uncertainty and degree of freedom of each component, expanded uncertainty and effective degree of freedom. After 2 years calibration experience, NSPO started to apply accreditation of Taiwan Accreditation Foundation (TAF) and have been accredited from April 10, 2017 by TAF. In order to satisfy requirements of TAF, for example: calibration report’s format, the logic of computer program by C# have been modified and validated by TAF. Therefore, NSPO can issue a report with both TAF logo and ILAC-MRA logo after calibrated instruments for customers. Owing to customers trust, NSPO stated to service external customers from May of 2017. Nowadays, NSPO have set up systems including Power Supply, Multi-Functions Meters, NI-4431 module series, Multi-functions Signal Generator, Current Probes, Electric-Load and Thermo-couple Meters. Systems in building and planning are Oscilloscope (building), Signal Conditioner (docs building) and Ionizing-gage/meters (planning, for High-Vacuum chambers). The main purpose to join this workshop is to share benefits of automated and semi-automated calibration system and to understand requirements from end-users.
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Chun, Sejong, and Byung-Ro Yoon. "Uncertainty Evaluation of Flow Meter Calibration by Gravimetric Water Flow Standards at KRISS." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20045.

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Abstract Petrochemical and electric power plants are using flow meters, of which capacity is larger than 1000 m3/h. They require the accuracy of flow meters better than ±0.3% if the flow meters are being used for custody transfer or allocation measurement. However, the number of national metrology institutes, which can handle this issue, is very limited, including PTB (Germany), NMIJ/AIST (Japan), MIKES (Finland), CEESI-NIST (USA), and TÜV-NEL (UK). Large-capacity flow measurement standards are also needed to make better quality control for process engineering in the Republic of Korea. This study aims at establishing the water flow measurement standards up to 2000 m3/h with uncertainty better than 0.06%. How to evaluate the measurement uncertainty is discussed for establishing the large-capacity water flow standards at KRISS.
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Agazar, Mohamed, Denis Perrillat, Hanane Saadeddine, Christophe Robert, Laurence Casteignau, and Dominique Fortune. "Study of non-invasive instruments for the measurement of pulsed X-ray high voltage tube." In 19th International Congress of Metrology (CIM2019), edited by Sandrine Gazal. Les Ulis, France: EDP Sciences, 2019. http://dx.doi.org/10.1051/metrology/201902002.

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Non-invasive instruments (kVp meters) are widely used in radiology with diagnostic and guidance systems. Placed in the x-ray beam, they combine detectors and filters, to determine X-ray tube voltage and exposure time, which are the most important quantities in radiology and diagnostic quality control. Calibration of these instruments were limited by reference bench capabilities. General Electric Medical System France and LNE (The national metrology institute in France) have developed a reference bench for the characterization of kVp meters. The set up includes a fast high voltage generator associated with its internal measuring systems and an X-ray tube. The measurements are compared with an invasive reference standard. The set-up is installed in a Faraday cage, precautions have been taken in order to carry out accurate measurements and special adaptations have been made to avoid stray capacitances, which affect the dynamic performance of the generator. Results have shown a good agreement with the internal measuring system of the generator but the kVp meters have shown both good and bad results depending the exposure time, the current and the positioning.
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Koike, Mariko. "New Automated Coaxial AC Bridge for Rapid Calibration of AC Resistors." In NCSL International Workshop & Symposium. NCSL International, 2017. http://dx.doi.org/10.51843/wsproceedings.2017.37.

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A new automated coaxial AC bridge 10:1 for the calibration of AC resistors from 0.1 O to 100kΩ in the frequency range from 50 Hz to 10 kHz has been fabricated by Japan Electric Meters Inspection Corporation (JEMIC). The distinguishing feature of our new AC bridge is that no injection signals are required to balance the bridge circuit, that is, the voltage difference is read directly. The system is computer-controlled using a coaxial mechanical scanner for setup, and it is only necessary to select 'start' on a PC. As a result, it takes less than one minute to calibrate an AC resistor. That is, our new method enables rapid calibration of the AC bridge. The AC bridge has been evaluated by using calculable resistance standards and by comparing it with a conventional AC bridge at JEMIC. The relative expanded uncertainties of the present system have been estimated to be 15×10-6 for the in-phase component and 30×10-6 for the quadrature component at 1 kHz.
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Callegaro, Luca. "Maintaining a Local Reference Scale for Electrical Impedance by Means of a Digital Impedance Bridge." In NCSL International Workshop & Symposium. NCSL International, 2020. http://dx.doi.org/10.51843/wsproceedings.2020.15.

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Electrical impedance is one of the most commonly measured electrical quantities and there is a wide variety of impedance meters commercially available. Electrical calibration laboratories usually use sets of artefact impedance standards to calibrate these meters. The traceability chain for electrical impedance is described with a particular emphasis on the use of impedance bridges to calibrate the impedance standards themselves. Up to now, coaxial transformer ratio bridges with outstanding accuracy have been used for this purpose, but these have a number of practical disadvantages. It is shown that digital impedance bridges, which use digital techniques to provide the accurate voltage ratios needed for bridge balancing, offer a viable alternative to transformer ratio bridges. The principles of operation of source-based and sampling-based impedance bridges are described. A joint research project whose aim is to show that digital impedance bridges provide, even for a laboratory with limited resources and expertise, a practical means of calibrating impedance standards at the parts per million level of accuracy is introduced. A source-based digital impedance bridge, designed and constructed within the project, is described and some preliminary measurement results presented.
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Mason, Nicholas, and Ivars Ikstrums. "An Evaluation of Process Metrology in a High Volume Factory." In NCSL International Workshop & Symposium. NCSL International, 2012. http://dx.doi.org/10.51843/wsproceedings.2012.24.

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Fluke Electronics is arguably best known as a manufacturer of hand-held digital multi-meters. These devices are manufactured on high volume factory production lines. Fluke’s high volume factories contain dozens of stations calibrating thousands of new instruments per year. Station downtime causes shipping delays and removing station references for routine calibration cause the station to be down. In the Everett Primary Electrical Laboratory (EPEL) we employ process metrology to monitor uncertainty and stability in the parts-per-million range. The EPEL directly supports the Fluke Calibration factory. The Fluke Calibration factory is a low volume area building handfuls of high-accuracy calibrators. The laboratory supports the factory by calibrating the test stations in-situ on the factory floor also using process metrology. Can process metrology be used in the high volume area to calibrate those stations in-situ? Is there any payback? Does it make sense? This paper describes a test-case conducted to determine the impact of process metrology in the high volume manufacturing areas. Differences between the high-volume and low-volume factories are discussed along with solutions implemented in the high-volume factory. The metrological impacts are investigated as well as quality and cost savings are provided.
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7

Hussein, Haitham M., Osama Terra, Hatem Hussein, and Mohamed Medhat. "Calibration of Electronic Distance Meters using Autocorrelation of Femtosecond Pulses." In CLEO: Applications and Technology. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_at.2022.jw3b.57.

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Calibration of Electronic Distance Meters is crucial since they are used in surveying and construction. A method is proposed here to calibrate EDMs using the autocorrelation of femtosecond pulses generated from an Optical Frequency Comb.
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8

Aurilio, Gianluca, Daniele Gallo, Carmine Landi, and Mario Luiso. "AC electronic load for on-site calibration of energy meters." In 2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2013. http://dx.doi.org/10.1109/i2mtc.2013.6555519.

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9

Danilevich, Sergey B., and Vitaly V. Tretyak. "Automatization of Processes of Testing and Calibration of Electric Meter." In 2020 1st International Conference Problems of Informatics, Electronics, and Radio Engineering (PIERE). IEEE, 2020. http://dx.doi.org/10.1109/piere51041.2020.9314685.

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Fabian-Manuel, Butean, Lica Septimiu, and Lie Ioan. "Calibration of Time-of-Flight Ultrasonic Flow Meters." In 2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME). IEEE, 2021. http://dx.doi.org/10.1109/siitme53254.2021.9663687.

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