NCSL International Workshop & Symposium Conference Proceedings 2014最新文献_第2页

Use of a Furnace for a Thermal Radiation Source 使用熔炉作为热辐射源

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.17

F. Liebmann

引用次数: 1

Calibrating A UUT on a Remote Computer Using Fluke MET/CAL® 使用Fluke MET/CAL®在远程计算机上校准ut

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.28

Michael L. Schwartz

引用次数: 0

Temperature and Dimensional Metrology: Unceretainty and Productivity 温度和尺寸计量:不确定度和生产率

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.54

J. Salsbury

{"title":"Temperature and Dimensional Metrology: Unceretainty and Productivity","authors":"J. Salsbury","doi":"10.51843/wsproceedings.2014.54","DOIUrl":"https://doi.org/10.51843/wsproceedings.2014.54","url":null,"abstract":"Mitutoyo America built a new dimensional calibration laboratory in 2013 that features much tighter temperature control than the prior laboratory. This paper is a case study in improving temperature control and the impact on dimensional measurements. The new laboratory is a high level laboratory with tight temperature control of 20±0.1°C, but the concepts presented in this paper apply to any level of improvements in temperature control in dimensional calibration or inspection laboratories. This paper will first discuss the justification presented to management for the temperature control, which included a carefully developed analysis of the projected improvements in measurement uncertainty. The process of specifying and verifying the environment will then be briefly discussed, followed by a presentation of the complex testing of the measurement processes to assess the actual improvements in the measurement uncertainty. The same processes and equipment, used in the two different environments, will be presented. Finally, this paper will discuss the somewhat surprising benefit of gains in productivity tied to improvements in temperature control, which has allowed certain calibrations to be completed with fewer repeat runs and therefore much more quickly. The improved temperature control has therefore not only allowed the measurement uncertainty to be reduced to desired targets but has also led to modifications in measurement procedures that have improved productivity and reduced costs.","PeriodicalId":446344,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2014","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115299030","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

In-Situ Temperature Calibration Capability for Dimensional Metrology 尺寸计量的现场温度校准能力

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.20

P. Rachakonda

{"title":"In-Situ Temperature Calibration Capability for Dimensional Metrology","authors":"P. Rachakonda","doi":"10.51843/wsproceedings.2014.20","DOIUrl":"https://doi.org/10.51843/wsproceedings.2014.20","url":null,"abstract":"The Dimensional Metrology Group (DMG) at the National Institute of Standards and Technology (NIST) has the capability to perform large range dimensional measurements in a facility called the Tape Tunnel. The Tape Tunnel is equipped with a 60 m long steel bench and a reference interferometer. Various artifacts and instruments, such as tape measures, optical cables, laser trackers, laser distance meters etc. are calibrated against the reference interferometer. The relative uncertainty (Uk=2) in the displacement measurement is 2.4×10-7. A major component of this uncertainty is the uncertainty in measuring the temperature in the Tape Tunnel. There are 14 temperature probes installed along the length of the steel bench; two each at seven equidistant locations. One probe measures the air temperature and the other measures the material temperature (of the steel bench). Historically, calibrating these probes involved removing all the 14 probes and sending them to the NIST Thermodynamic Metrology Group. This process introduced a considerable amount of downtime to the DMG’s measurement capabilities. This also introduced uncertainties due to a) variation in the contact geometry of the material probe with the steel bench during reinstallation, and b) variation in the resistances of the probes’ cables due to pinching and/or elongation. In an attempt to address these issues, a new in-situ temperature calibration system was developed. This paper discusses the system components, an in-situ calibration procedure, the uncertainty sources involved in the calibration process, presents an uncertainty budget, and examines it with a Monte Carlo simulation. This system enables the DMG to perform quicker in-situ temperature calibration, at frequent intervals, with minimal downtime and provides better uncertainties in the dimensional measurements.","PeriodicalId":446344,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2014","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121825304","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

NCSLI North American 1Ω Interlaboratory Comparison (2012-2014) NCSLI北美1Ω实验室间比较(2012-2014)

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.65

K. Wendler

引用次数: 0

Determination of Emissivity by Using Reflected Thermal Radiation 用反射热辐射法测定发射率

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.07

F. Liebmann

引用次数: 0

Improved Performance, Remote Realization, And Accessibility Inter-American Metrology System (SIM) Time Scale 改进的性能，远程实现，和访问美洲计量系统(SIM)时标

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.19

J. M. López-Romero

引用次数: 0

Calibration Requirements and Good Practices for Modular Instuments 模块化仪器的校准要求和良好规范

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.61

Dimaries Nieves, P. Robinson

{"title":"Calibration Requirements and Good Practices for Modular Instuments","authors":"Dimaries Nieves, P. Robinson","doi":"10.51843/wsproceedings.2014.61","DOIUrl":"https://doi.org/10.51843/wsproceedings.2014.61","url":null,"abstract":"A monitoring, measuring, or testing activity with test instruments is only useful and effective when the measurement results are reliable. To ensure the reliability of the measurement results from the test instruments, a calibration must be performed. Every electronic device needs a calibration schedule to verify its performance. As with traditional instrumentation, modular instruments should be verified and adjusted in a consistent manner to ensure its performance and to maintain its accuracy over time. However, unlike traditional instrumentation, modular instruments have additional requirements and considerations that need to be accounted for in order to perform a proper verification and adjustment process. As you may know, modular instrumentation consists of a combination of chassis, embedded controller and modules, and each module needs to be considered and maintained in order to obtain a consistent and reproducible process. Additionally, a software application is necessary in order to communicate with the instruments and obtain the results. The impact of these system aspects is not always considered. In this paper, calibration requirements and considerations that may influence the quality and confidence of the results for a modular instrument calibration process will be presented. Good Calibration Practices for modular instruments are defined and explained in order to considered and applied during the process. These good calibration practices also can be used by end users to ensure the quality of their measurements.","PeriodicalId":446344,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2014","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128411887","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

Why it is Important to Look at Artifact Calibration Shift Reports 为什么看伪影校准移位报告很重要

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.36

Gary Bennett

引用次数: 0

Project-based learning as a strategy for teaching metrology 以项目为基础的计量教学策略

NCSL International Workshop & Symposium Conference Proceedings 2014 Pub Date : 1900-01-01 DOI: 10.51843/wsproceedings.2014.34

F. Mercader-Trejo

{"title":"Project-based learning as a strategy for teaching metrology","authors":"F. Mercader-Trejo","doi":"10.51843/wsproceedings.2014.34","DOIUrl":"https://doi.org/10.51843/wsproceedings.2014.34","url":null,"abstract":"Project-based learning (PBL) is a well-known didactic strategy to improve students' understanding of science, as well as their problem-solving and collaboration skills, to a greater extent than traditional methods. Students who learn science or technology through project-based learning also report that they find it more engaging than traditional instructional techniques. PBL strategy was applied to students of engineering degree in industrial metrology taught at the Universidad Politécnica de Santa Rosa Jáuregui located in the state of Querétaro, Mexico. This paper describes the experience through which students planned, implemented, and evaluated a project with real-world application beyond the classroom, which leads to a drive for research and production of knowledge. Professors of different subjects worked together to think about the project. In this case the selected integrating project was the design and performance evaluation of a bio filter for the treatment of gray water in rural households. This project includes concepts related to the subjects taught in the period of study. The subjects considered were: Analytical chemistry, industrial processes, statistics, mathematics, engineering drawing, interpersonal development and English. The use of this strategy helped to promote student participation in the learning process. Results were very satisfactory because of the knowledge and skills acquired by students. This allowed the development of new capabilities that complement their education and prepare them for the workplace. Among the skills and capabilities developed are: interaction in teamwork, independent learning, responsibility and time management, among others.","PeriodicalId":446344,"journal":{"name":"NCSL International Workshop & Symposium Conference Proceedings 2014","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114210543","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

NCSL International Workshop &amp; Symposium Conference Proceedings 2014最新文献

NCSL International Workshop & Symposium Conference Proceedings 2014最新文献