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On-site calibration system for isolation current transformers 隔离电流互感器现场标定系统
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5545013
E. Mohns
{"title":"On-site calibration system for isolation current transformers","authors":"E. Mohns","doi":"10.1109/CPEM.2010.5545013","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5545013","url":null,"abstract":"An on-site calibration system for three-phase isolation current transformers is described. It is based on precise power comparators which are shipped to the customer. Measurements can be done at test currents up to 120 A. The measurement uncertainties of the self-calibrating measurement system are in the order of 0.005 % for the ratio error and 0.01 crad for the phase displacement at power frequencies.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128416767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Detection of gas component with femtosecond laser pulse 飞秒激光脉冲气体成分检测
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544515
Nan-xi Xu, Jianwei Li, J. Li, Zhixin Zhang, L. Xiong
{"title":"Detection of gas component with femtosecond laser pulse","authors":"Nan-xi Xu, Jianwei Li, J. Li, Zhixin Zhang, L. Xiong","doi":"10.1109/CPEM.2010.5544515","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544515","url":null,"abstract":"A technique was provided to nonintrusively detect different gas component by measuring the field-free alignment of molecules caused by 810nm femtosecond laser pulse. The results demonstrated that different gases present different alignment structures at room temperature under one atmosphere pressure. The technique can be employed for rapid detection of gas component.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114599414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transition shape effect in the transients generated by a Programmable Josephson Voltage Standard 可编程约瑟夫森电压标准产生的瞬态中的过渡形状效应
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544163
B. Jeanneret, F. Overney, A. Rufenacht, J. Nissila
{"title":"Transition shape effect in the transients generated by a Programmable Josephson Voltage Standard","authors":"B. Jeanneret, F. Overney, A. Rufenacht, J. Nissila","doi":"10.1109/CPEM.2010.5544163","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544163","url":null,"abstract":"This study addresses the effect of the transients on the operation of a 1V programmable Josephson voltage standard. A careful modeling of the bias current dependence of the waveform generated shows that the particular shape of the voltage transition has little influence on the harmonic contents of the waveform. The critical point is the timing associated with the transition.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129449412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DDS sources for precice measurement 用于精确测量的DDS源
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544337
Y. Fu, Z. Li, Z. Zhang, J. Sun, L. Chen
{"title":"DDS sources for precice measurement","authors":"Y. Fu, Z. Li, Z. Zhang, J. Sun, L. Chen","doi":"10.1109/CPEM.2010.5544337","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544337","url":null,"abstract":"DDS sources were developed in NIM for impedance measurements. Stable and accurate phase difference can be obtained easily by this technique. It has been used for mutual inductance measurements and an uncertainty of 1×10−7 has been obtained.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129590916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The progress of joule balance in NIM 焦耳平衡在NIM中的研究进展
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543653
Z. Zhang, Q. He, Z. Li, Y. Lu, J. Zhao, B. Han, C. Li, S. Li, Y. Fu
{"title":"The progress of joule balance in NIM","authors":"Z. Zhang, Q. He, Z. Li, Y. Lu, J. Zhao, B. Han, C. Li, S. Li, Y. Fu","doi":"10.1109/CPEM.2010.5543653","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543653","url":null,"abstract":"The precise measurement of Planck Constant h to establish a kind of quantum mass standard is an important but very difficult work. The Joule Balance method, for the same purpose but different from Watt Balance method, is going on in NIM for three years. The principle and progress are described.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133062778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Establishing an AC JOsephson Voltage Standard at NRC NRC交流约瑟夫森电压标准的建立
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544218
P. Filipski, M. Boecker, Samuel P. Benz, C. Burroughs
{"title":"Establishing an AC JOsephson Voltage Standard at NRC","authors":"P. Filipski, M. Boecker, Samuel P. Benz, C. Burroughs","doi":"10.1109/CPEM.2010.5544218","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544218","url":null,"abstract":"NRC recently established an AC Josephson Voltage Standard (ACJVS) system based on a NIST pulse-driven Josephson-junction array. This paper describes the efforts undertaken at NRC and the experience that was gained. An experimental method of measuring corrections due to the probe leads is described and first results are reported.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130201748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A method to correct inductive voltage dividers error caused by capacitances between winding and screen 一种校正电感分压器绕组与屏间电容误差的方法
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543427
Zhao Jianting, He Qing, L. Yunfeng
{"title":"A method to correct inductive voltage dividers error caused by capacitances between winding and screen","authors":"Zhao Jianting, He Qing, L. Yunfeng","doi":"10.1109/CPEM.2010.5543427","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543427","url":null,"abstract":"Distributed shunt impedances and leakage impedances in the windings of inductive voltage dividers (IVDs) cause the major components of ac voltage ratio errors, and these two kinds of errors had been well investigated from both theory and experiments. The winding -to-screen capacitances of IVDs can also introduce small but significant ratio error. A theoretical analysis result for this kind of error has been obtained, and a method to correct this kind of error has been presented.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122352020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-frequency quadrature bridge for use in ac QHR measurement 用于交流QHR测量的多频正交电桥
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544373
A. Domae, Y. Nakamura
{"title":"Multi-frequency quadrature bridge for use in ac QHR measurement","authors":"A. Domae, Y. Nakamura","doi":"10.1109/CPEM.2010.5544373","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544373","url":null,"abstract":"This study presents the designs of a multi-frequency quadrature bridge that enables standard capacitors to be calibrated at a measurement frequency of 1.592 kHz based on the ac quantized Hall resistance (ac QHR).","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127864192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Study on a passive resistive fan attentuation network 无源电阻式风扇衰减网络的研究
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544768
Liu Na, He Xiaobing, Wang Dahua
{"title":"Study on a passive resistive fan attentuation network","authors":"Liu Na, He Xiaobing, Wang Dahua","doi":"10.1109/CPEM.2010.5544768","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544768","url":null,"abstract":"A new passive variable attenuation network with Fan-like shape was described. The characteristics of a fan-like resistive attenuation network were compared with those of Tee attenuation network and PI attenuation network. There are many advantages for this Fan attenuation network, such as output impedance matching input impedance, wide attenuation range and easier manufacture resistor values.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127910195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hyperfine structure of molecular-iodine absorption spectroscopy at 561nm 561nm处分子碘吸收光谱的超精细结构
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544925
Tao Yang, Jianping Cao, Ye Li, Z. Fang, Chunqing Gao, E. Zang
{"title":"Hyperfine structure of molecular-iodine absorption spectroscopy at 561nm","authors":"Tao Yang, Jianping Cao, Ye Li, Z. Fang, Chunqing Gao, E. Zang","doi":"10.1109/CPEM.2010.5544925","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544925","url":null,"abstract":"An 1123-nm single-frequency laser with 1-W output power has been made by home, and 10-mW output power double frequency at 561nm is obtained. The modulation transform spectroscopy is used to scan the hyperfine structure lines of molecular iodine absorption spectroscopy transitions at 561nm. Four transition spectroscopy bands of <sup>127</sup>I<inf>2</inf> are observed, and transitions of P(58)22−1 and R(62)22−1 are discussed to be references of 561-nm <sup>127</sup>I<inf>2</inf> optical frequency standard.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"1151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121447918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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