Academic literature on the topic 'Energy meter calibration'

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Journal articles on the topic "Energy meter 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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Wang, San Qiang, Xing Zhe Hou, Yan Lin Liu, and Qiu Hui Zhuang. "Electronic Type Electric Energy Meter Calibrating Method Application Research." Applied Mechanics and Materials 278-280 (January 2013): 994–97. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.994.

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With the progress of science and technology, electronic type electric energy meter is widely used in electric energy metering and charging in China, especially in rural power network reform, investment, electronic type electric energy meter with its linearity, stability is good, the power consumption of small, voltage and frequency response speed, high measurement precision, to further improve the market share, but how to test electronic type electric energy meter, but has been puzzling the test technical staff, according to the practical experience on the above problem undertakes a few discuss. This paper analyzes the electronic type electric energy meter principle, characteristics, focus on the research of the electric energy meter calibration method, the electronic type electric energy meter calibrating idea and train of thought.
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Hou, Tao, and Yan Hong Guo. "Research of Calibration Instrument of Multi-Site Single-Phase Energy Meter." Applied Mechanics and Materials 273 (January 2013): 424–27. http://dx.doi.org/10.4028/www.scientific.net/amm.273.424.

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This design is a full-featured, high precision power meter on-site calibration device and integrated electrical parameter measuring device. The internal use of SCM control, you can not open the instrument case, through the keys with precision adjustment, thus increasing the reliability and stability. This study projects able to keep the case of electricity meters for a variety of electrical power meter, indicating a variety of instrumentation and electrical power transmitters to provide on-site instruments detection, but also to voltage, current, power, power factor, phase, frequency and other electrical parameters measurement.
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Балабан, В. М., К. И. Мунтян, and Е. П. Тимофеев. "CALIBRATION OF A FLUORESCENT PULSE LASER ENERGY METER." Ukrainian Metrological Journal, no. 3A (November 30, 2020): 103–8. http://dx.doi.org/10.24027/2306-7039.3a.2020.218498.

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Kromplyas, B. A., A. S. Levytskyi, and Ie O. Zaitsev. "SMART SHIELD PANEL AC VOLTMETER CELL." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 60 (December 10, 2021): 65–74. http://dx.doi.org/10.15407/publishing2021.60.065.

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In this paper smart shield panel electrical operating parameters meters of energy generating facilities functionality is analysis. The list of functions of measuring instruments supplemented, which allowed increasing their operational characteristics. Methods and results of realization of these functions given for the panel board intellectualized voltage meter of alternating current. The structural scheme of the developed panel board intellectualized meter is described and its main technical characteristics are given.A method of mobile calibration of the device is proposed, in which a calibration signal source with a separate fixed value is used, and the calibration process itself is controlled from the device keyboard. A modernized detailed and simplified calibration algorithm is present. Ref. 12, fig. 5, tabl. 2.
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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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Shen, J. J. S., V. C. Ting, and E. H. Jones. "Application of Sonic Nozzles in Field Calibration of Natural Gas Flows." Journal of Energy Resources Technology 111, no. 4 (December 1, 1989): 205–13. http://dx.doi.org/10.1115/1.3231425.

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This paper presents Chevron Oil Field Research Company’s operating experience using the sonic nozzle as a proving device for measuring natural gas flows in field tests. The nozzle reference flow rate was used for calibrating orifice, turbine, and vortex meters in three tests with a pipeline quality gas and an unprocessed natural gas as the working fluid. For pipeline gas, the field calibration results show good agreement between the sonic nozzle reference and a turbine meter while the accuracy of orifice metering is size dependent. The 4-in. (102-mm) orifice meter flow rates agree well with the nozzle reference, but the 16-in. (406-mm) orifice flow measurements are up to 2 percent lower. Deviations between the test meters and the sonic nozzles are generally larger for the unprocessed gas. These field projects demonstrate that sonic nozzles can be operated successfully as a prover for processed natural gas, while more work is needed to study the critical flow in nozzles for unprocessed natural gas.
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Hou, Songxue, Yuyou Liu, Yunying Xu, Shunchao Wang, and Dan Xu. "Analysis and optimization of calibration method of digital energy meter." Journal of Physics: Conference Series 887 (August 2017): 012034. http://dx.doi.org/10.1088/1742-6596/887/1/012034.

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Carstens, Herman, Xiaohua Xia, and Sarma Yadavalli. "Low-cost energy meter calibration method for measurement and verification." Applied Energy 188 (February 2017): 563–75. http://dx.doi.org/10.1016/j.apenergy.2016.12.028.

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Dissertations / Theses on the topic "Energy meter calibration"

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Larsson, Peter. "Calibration of Ionization Chambers for Measuring Air Kerma Integrated over Beam Area in Diagnostic Radiology." Doctoral thesis, Linköpings universitet, Medicinsk radiofysik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7848.

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The air kerma area product PKA is an important quantity used by hospital physicists in quality assurance and optimization processes in diagnostic radiology and is recommended by national authorities for setting of diagnostic reference levels. PKA can be measured using a transmission ionization chamber (kerma area product (KAP) meter) mounted on the collimator housing. Its signal QKAP must be calibrated to give values of PKA. The objective of this thesis is to analyze the factors influencing the accuracy of the calibration coefficients k= PKA/QKAP and of reported PKA-values. Due to attenuation and scatter in the KAP-meter and presence of extra-focal radiation, values of PKA depend on the choice of integration area A and the distance of the reference plane from the focal spot yielding values of PKA that may differ by as much as 23% depending on this choice. The two extremes correspond to (1) PKA=PKA,o integrated over the exit surface of the KAP-meter resulting in geometry independent calibration coefficients and (2) PKA=PKA,Anom integrated over the nominal beam area in the patient entrance plane resulting in geometry dependent calibration coefficients. Three calibration methods are analysed. Method 1 aims at determine PKA,Anom, for clinical use at the patient entrance plane. At standard laboratories, the method is used to calibrate with respect to radiation incident on the KAP-meter. Problems with extra-focal and scattered radiation are then avoided resulting in calibration coefficients with low standard uncertainty (±1.5 %, coverage factor 2). Method 2 was designed in this work to approach determination of PKA,o using thermoluminescent detectors to monitor contributions from extra-focal radiation and account for the heel effect. The uncertainty in derived calibration coefficients was ± 3% (coverage factor 2). Method 3 uses a Master KAP-meter calibrated at a standard laboratory for incident radiation to calibrate clinical KAP-meters. It has potential to become the standard method in the future replacing the tedious method 2 for calibrations aiming at determination of PKA,o. Commercially available KAP-meters use conducting layers of indium oxide causing a strong energy dependence of their calibration coefficients. This dependence is investigated using Monte Carlo simulations and measurements. It may introduce substantial uncertainties in reported PKA– values since calibration coefficients as obtained from standard laboratories are often available only at one filtration (2.5 mm Al) as function of tube voltage or HVL. This is not sufficient since higher filtrations are commonly used in practice, including filters of Cu. In extreme cases, calibration coefficients for the same value of HVL but using different tube voltages and filtrations can deviate by as much as 30%. If standardised calibration methods are not used and choice of calibration coefficients not carefully chosen with respect to beam quality, the total uncertainty in reported PKA–values may be as large as 40-45%. Conversion of PKA-values to risk related quantities is briefly discussed. The large energy dependence of the conversion coefficients, ε/PKA, for determination of energy imparted,ε, to the patient reduces to a lower energy dependence of calibration coefficients CQ,ε = ε/QKAP for determination of ε from the KAP-meter signal.
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Books on the topic "Energy meter calibration"

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Electronics and Electrical Engineering Laboratory (National Institute of Standards and Technology). Optoelectronics Division., ed. High-accuracy laser power and energy meter calibration service. Boulder, Colo: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2003.

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Electronics and Electrical Engineering Laboratory (National Institute of Standards and Technology). Optoelectronics Division, ed. High-accuracy laser power and energy meter calibration service. Boulder, Colo: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2003.

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Livigni, David J. High-accuracy laser power and energy meter calibration service. Boulder, Colo: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2003.

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Electronics and Electrical Engineering Laboratory (National Institute of Standards and Technology). Optoelectronics Division., ed. High-accuracy laser power and energy meter calibration service. Boulder, Colo: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2003.

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Electronics and Electrical Engineering Laboratory (National Institute of Standards and Technology). Optoelectronics Division, ed. High-accuracy laser power and energy meter calibration service. Boulder, Colo: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2003.

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Chartered Institution of Building Services Engineers, ed. Building energy metering. London: Chartered Institution of Building Services Engineers, 2009.

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High-Accuracy Laser Power and Energy Meter Calibration Service. National Institute of Standards and Tech, 2004.

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High-accuracy laser power and energy meter calibration service. Boulder, Colo: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2003.

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Laser doppler velocimetry for continuous flow solar-pumped iodine laser system. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1991.

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Book chapters on the topic "Energy meter calibration"

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Pruna, Edwin, Carlos Bustamante, Miguel Escudero, Santiago Mullo, Ivón Escobar, and José Bucheli. "Automatic Calibration for Residential Water Meters by Using Artificial Vision." In Intelligent Manufacturing and Energy Sustainability, 173–80. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1616-0_16.

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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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Liu, Xiaolong, Jushang Li, Ruitong Zhang, Hongjie Jiang, Xikuan Chen, Jihao Cheng, and Fucheng Liu. "Transient Quantitative Identification Algorithm Based on Laser Impulse Response." In Proceedings of the 2022 International Conference on Smart Manufacturing and Material Processing (SMMP2022). IOS Press, 2022. http://dx.doi.org/10.3233/atde220835.

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In order to improve the measurement accuracy of transient heat flow based on laser pulse response technology, a dynamic calibration algorithm of heat flow based on pulse response of fiber semiconductor laser is proposed. The system uses a high-power fiber semiconductor laser to generate modulated excitation, and quantitatively detects the transient heat flow energy in the form of pulsed radiation. The light intensity of the light source is adjusted by the homogenization of the light spot, and the energy measurement is completed with a Gardon meter. The data acquisition card and signal analysis circuit are used to realize the high-speed calculation and acquisition of the heat flow signal. Using the transient quantitative identification algorithm, the dynamic test performance of a circular foil heat flow meter of the GD series is tested and calibrated. The simulation analysis of the system’s ability to modulate the signal verifies the feasibility of the system’s light source modulation. A transient quantitative identification system based on high-power fiber semiconductor lasers is established in the experiment. The data curve noise after passing this algorithm is smaller and the accuracy is higher, which verifies the effectiveness of the algorithm. The algorithm can be applied to the field of rapid quantitative identification and analysis of transient heat flow energy.
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Petryshyn, Igor, and Olexandr Bas. "NATURAL GAS HEAT COMBUSTION DETERMINATION ON MEASURING SYSTEMS WITH DUPLICATE GAS UNITS." In Integration of traditional and innovative scientific researches: global trends and regional aspect. Publishing House “Baltija Publishing”, 2020. http://dx.doi.org/10.30525/978-9934-26-001-8-2-8.

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The paper focuses on the need to determine the natural gas heat combustion in order to transition to gas metering in units of energy. The technical organization of gas transportation in the main and distribution pipelines on the territory of Ukraine is shown. A detailed analysis of regulatory and legal support, which regulates the definition and accounting of quantitative and qualitative characteristics of natural gas at gas metering units. The draft Rules for determining the natural gas volume are considered in detail. Specified variants of determining the weighted average value of combustion heat in the case of complex gas supply systems with the use of flow measuring means of gas combustion heat. The necessity and urgency of determining the natural gas heat combustion on measuring systems, which are equipped with duplicate metering units without the installation flow means measuring the heat combustion. Emphasis is placed on the fact that a large number of measuring systems are built on the method of variable pressure drop with the use of standard orifice devices. It is pointed out that this method, according to its physical principle, measures the mass gas flow rate. It is also stipulated that ultrasonic gas meters are often used to complete duplicate metering units. The advantages of ultrasonic meters are given. Attention is drawn to the availability of technical metrological support in Ukraine on the basis calibration prover, which includes two secondary standards gas volume and volume flow rate units. Methods and technical means for determining the natural gas heat combustion are analyzed. The calculation of the gas heat combustion and the Wobbe number based on the density values is shown. It is noted that the value of the gas mass flow rate is related to the value of the gas volume flow rate precisely the value of density. The nonlinear dependence of the gas mass heat combustion for the density, which is associated with a disproportionate change in the percentage of carbon atoms to hydrogen atoms, is shown. The structural scheme of the measuring system with the duplicating metering unit for gas density definition and gas heat combustion calculation is developed. The density calculation and natural gas heat combustion depending on the molar fraction of nitrogen and carbon dioxide in the gas from the minimum to the maximum value is carried out. The linear dependence of the change in the gas heat combustion for the molar fraction of nitrogen is established, on the basis of which the method of controlling the gas heat combustion for measuring systems with a duplicate metering unit is proposed. It is shown that the developed procedure for determining the natural gas heat combustion based on the value of density, which is obtained from the calculation of gas mass flow rate and gas volume flow rate consumption on measuring systems with duplicate metering units exactly satisfies class B and C according to DSTU OIML R 140.
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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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"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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Conference papers on the topic "Energy meter calibration"

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Dubara, Himanshu V., Mahesh Parihar, and Krithi Ramamritham. "Smart Energy Meter Calibration." In e-Energy '21: The Twelfth ACM International Conference on Future Energy Systems. New York, NY, USA: ACM, 2021. http://dx.doi.org/10.1145/3447555.3466569.

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Cai, Ying. "Design of Laser Energy Meter Calibration System." In 2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI). IEEE, 2021. http://dx.doi.org/10.1109/icemi52946.2021.9679676.

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Edwards, Shannon, Dave Bobick, and Steven Weinzierl. "Impact of harmonic current on energy meter calibration." In 2011 IEEE Energytech. IEEE, 2011. http://dx.doi.org/10.1109/energytech.2011.5948506.

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Xu, Hongwei, Zhan Meng, Junwei Zhang, Chao Ding, and Zhongxiao Cong. "Research on Calibration Method for Digital Energy Meter." In 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/jimec-17.2017.128.

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Chen, Qiong, Li Tang, and Cheng Chen. "The Calibration Algorithm of Energy Detection and Site Meter." In 2011 Second International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2011. http://dx.doi.org/10.1109/icdma.2011.302.

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Xiao, Ji, Yingying Cheng, Jie Du, and Feng Zhou. "Discussion on Measurement and Field Calibration of Digital Energy Meter." In 2016 5th International Conference on Sustainable Energy and Environment Engineering (ICSEEE 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/icseee-16.2016.110.

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Chen, Gang, Yulin Wu, Guangjun Cao, Mingjie Li, and Suhong Fu. "Prediction on Meter Factor of the Turbine Flowmeter With Unsteady Numerical Simulation." In ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/fedsm2008-55144.

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The turbine flow meter is widely used in the flow rate measuring for its high accuracy and good repeatability. The flow rate will be calculated based on its meter factor, which is the most important factor of the turbine flow meter. The meter factor means pulses or revolution of the impeller per unit volume, and it can only be got from the calibration experiment. At the given flow rate, the driving torque on the impeller is equal to the drag torque, as many paper have pointed out. Based on the torque balancing equations, unsteady numerical simulation is carried out with RNG turbulence model and UDFs (User Defined Functions) in Fluent Code. The meter factor under different flow rate is calculated with the unsteady simulation. The prediction results based on the numerical simulation showed the same trends as the calibration experiment. At the most flow rate, the meter factor keeps constant, but at the lower flow rate, the meter factor higher than the constant. Because of neglecting the bearing friction drag in the process, the meter factor by numerical simulation is larger than experiment.
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Sinha, S., N. Mandal, and S. C. Bera. "Calibration of electrode polarization impedance type flow meter using neural network." In 2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC). IEEE, 2016. http://dx.doi.org/10.1109/ciec.2016.7513807.

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Myers, Daryl R., Thomas L. Stoffel, Ibrahim Reda, Stephen M. Wilcox, and Afshin M. Andreas. "Recent Progress in Reducing the Uncertainty in and Improving Pyranometer Calibrations." In ASME 2001 Solar Engineering: International Solar Energy Conference (FORUM 2001: Solar Energy — The Power to Choose). American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/sed2001-126.

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Abstract The Measurements and Instrumentation Team within the Distributed Energy Resources Center at the National Renewable Energy Laboratory, NREL, calibrates pyranometers for outdoor testing solar energy conversion systems. The team also supports climate change research programs. These activities led NREL to improve pyranometer calibrations. Low thermal-offset radiometers measuring the sky diffuse component of the reference solar irradiance removes bias errors on the order of 20 Watts per square meter (W/m2) in the calibration reference irradiance. Zenith angle dependent corrections to responsivities of pyranometers removes 15 to 30 W/m2 bias errors from field measurements. Detailed uncertainty analysis of our outdoor calibration process shows a 20% reduction in the uncertainty in the responsivity of pyranometers. These improvements affect photovoltaic module and array performance characterization, assessment of solar resources for design, sizing, and deployment of solar renewable energy systems, and ground-based validation of satellite-derived solar radiation fluxes.
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Tan, Hengyu, Hejun Yao, Yan Huang, Huanning Wang, Zhihua Zhao, and Yan He. "Temperature-Controlled Smart Energy Meter Field Calibration System Based on Measurement Risk Rating." In 2019 3rd International Conference on Smart Grid and Smart Cities (ICSGSC). IEEE, 2019. http://dx.doi.org/10.1109/icsgsc.2019.00-18.

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Reports on the topic "Energy meter calibration"

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Livigni, David. High-accuracy laser power and energy meter calibration service. Gaithersburg, MD: National Institute of Standards and Technology, 2003. http://dx.doi.org/10.6028/nist.sp.250-62.

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