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Traceable calibration system for non-conventional current sensors with analogue or digital output

Yeying Chen, Enrico Mohns, Michael Seckelmann, Soeren De Rose
2021 Zenodo  
This paper describes the setup of a traceable calibration system for conventional or non-conventional current sensors even with digital output.  ...  The accuracies of the reference current transformers are within ±10 μA/A and μrad at power frequency.  ...  The setup of a calibration system for current transformer calibrationsThe calibration system is appropriate for any kind of analogue current sensors (conventional or non-conventional CTs) or CTs with digital  ... 
doi:10.5281/zenodo.5704497 fatcat:lihv3m77yrd5xifcbc6s6xzeqm

Metrological Challenges in Collaborative Sensing: Applicability of Digital Calibration Certificates

Tuukka Mustapää, Pekka Nikander, Daniel Hutzschenreuter, Raine Viitala
2020 Sensors  
The quality of the data provided by these sensors may be unknown. For these reasons, advanced data processing and sensor network self-calibration methods have become popular research topics.  ...  We propose a conceptual solution based on Digital Calibration Certificates (DCCs), Digital SI (D-SI), and cryptographic digital identifiers, for validation of data quality and trustworthiness.  ...  • Optional attachment: Data container for a typically human-readable document, such as a conventional analogue calibration certificate (e.g., in PDF format).  ... 
doi:10.3390/s20174730 pmid:32825715 fatcat:n4oo75gkfzhhxfe7mhnaarcd3e

Measurement and Instrumentation Principles

Alan S Morris
2001 Measurement science and technology  
and digital instruments 2.1.4 Indicating instruments and instruments with a signal output 2.1.5 Smart and non-smart instruments 2.2 Static characteristics of instruments 2.2.1 Accuracy and inaccuracy  ...  Preface xvii Acknowledgements xx Part 1: Principles of Measurement 1 INTRODUCTION TO MEASUREMENT 1.1 Measurement units 1.2 Measurement system applications 1.3 Elements of a measurement system 1.4 Choosing  ...  Acknowledgements The author gratefully acknowledges permission by John Wiley and Sons Ltd to reproduce some material that was previously published in Measurement and Calibration Requirements for Quality  ... 
doi:10.1088/0957-0233/12/10/702 fatcat:f5hlepql2jaltjlewcyd4xdifm

Uncertainty evaluation for the dynamic measurement of deflections with a falling-weight-type impulse load device

L Martins, A Ribeiro, J Alves e Sousa, A Freire, S Fontul, F Batista, A Maia
2018 Journal of Physics, Conference Series  
This equipment is used in road and airfield pavements in-situ testing, contributing for the assessment of their performance analysis and characterization.  ...  This study aims at the determination of the deflection measurement uncertainty, following the GUM approach, where quantities are considered constant in time, and its comparison with the results obtained  ...  The performed n discrete-time observations y[n] are considered as the result of an analogue-to-digital conversion (ADC) of the system output signal, affected by noise disturbance, ε [n] .  ... 
doi:10.1088/1742-6596/1044/1/012072 fatcat:gjhbqbtsxrewvneljpuiaqe4xe

Metrology in electricity and magnetism: EURAMET activities today and tomorrow

F Piquemal, B Jeckelmann, L Callegaro, J Hällström, T J B M Janssen, J Melcher, G Rietveld, U Siegner, P Wright, M Zeier
2017 Metrologia  
In 2012 EURAMET undertook an extensive roadmapping exercise for proposed activities for the next decade which will also be discussed in this paper.  ...  It encompasses almost all modern scientific, industrial, and societal challenges, e.g. the revision of the International System of Units, the profound transformation of industry, changes in energy use  ...  , systems for voltage measurement using the Pockels effect, or upgraded conventional instrument transformers with digital or optical readouts) [68] .  ... 
doi:10.1088/1681-7575/aa7cae fatcat:si4vb4pk6bcw5novfa7yuf6jvy

State of the Art on High Voltage Metrology: Past, Present and Future

2022 Journal of Measurement Science and Applications (JMSA)  
High Direct Current (DC) and Alternating Current (AC) measuring devices for high voltage are extensively used in numerous claims.  ...  Their most common applications are in power electronics, medical technology, electromagnetic compatibility, particle accelerators, aluminum production, and electronic ignition systems.  ...  The radiated signals are captured by antennas or sensors with special bandwidth [76] .  ... 
doi:10.21608/jmsa.2022.219864 fatcat:ymajxlxtrjcwlpp34p3huyflku

Development of a driftless Johnson noise thermometer for nuclear applications

Jonathan V. Pearce, Paul Bramley, David Cruickshank, A. Lyoussi, M. Giot, M. Carette, I. Jenčič, C. Reynard-Carette, L. Vermeeren, L. Snoj, P. Le Dû
2020 EPJ Web of Conferences  
Existing temperature sensors such as thermocouples and platinum resistance thermometers suffer from calibration drift, especially in harsh environments, due to mechanical and chemical changes (and transmutation  ...  A Johnson noise thermometer never needs calibration and is insensitive to the condition of the sensor material, which makes it ideally suited to long-term temperature measurement in harsh environments.  ...  INTRODUCTION HERMOMETRY in nuclear processes generally relies on T conventional sensors such as thermocouples or resistance thermometers.  ... 
doi:10.1051/epjconf/202022503001 fatcat:xvzmefcvzff23fl4deqhdrgjoq

Agricultural ammonia sensor using diode lasers and photoacoustic spectroscopy

Michael E Webber, Tyson MacDonald, Michael B Pushkarsky, C Kumar N Patel, Yongjing Zhao, Nichole Marcillac, Frank M Mitloehner
2005 Measurement science and technology  
The sensor was built in an enclosure for continuous, unattended operation in dusty and humid conditions.  ...  A trace-gas sensor based on fibre-amplifier enhanced photoacoustic spectroscopy has been developed for measuring ambient ammonia in agricultural settings.  ...  (EDFA = erbium-doped fibre amplifier; OA cell = optoacoustic cell; TDL = tunable diode laser; TEC = thermo-electric cooler; µphone = microphone; A/D = analogue-to-digital converter; D/A = digital-to-analogue  ... 
doi:10.1088/0957-0233/16/8/002 fatcat:jk6aitedtbf2jk6sd4j7g3a4a4

Quantitative thermal imaging using single-pixel Si APD and MEMS mirror

Matthew J. Hobbs, Matthew P. Grainger, Chengxi Zhu, Chee Hing Tan, Jonathan R. Willmott
2018 Optics Express  
In this work, we present a micromechanical systems (MEMS) mirror based scanning thermal imaging camera with reduced measurement uncertainty compared to focal-plane array based systems.  ...  Abstract: Accurate quantitative temperature measurements are difficult to achieve using focal-plane array sensors.  ...  This slow acquisition time could be improved by implementing a faster method of analogue-to-digital conversion.  ... 
doi:10.1364/oe.26.003188 pmid:29401850 fatcat:idmtlhsuibgupkejjsn367w3wa

Developing digital fieldwork technologies at the British Geological Survey

Colm J. Jordan, Bruce Napier
2015 Geological Society Special Publication  
(Jordan et al 2005) . 58 Furthermore, rather than simply replicating the tasks that can be completed with the 59 analogue pen/paper/map routine, the digital system must offer additional functionality.  ...  There is no mention of digital field mapping 36 techniques or the prospect of their introduction in the future, although current educators are 37 trying to address this (e.g.  ...  , in order 159 to improve traceability in the derived outputs and to separate, where possible, observed data 160 with interpreted information.  ... 
doi:10.1144/sp436.6 fatcat:rq2om7tsaja2np5wh2uizyjkv4

Field Validation of Remote Sensing Methane Emission Measurements

Tom Gardiner, Jon Helmore, Fabrizio Innocenti, Rod Robinson
2017 Remote Sensing  
a typical expanded (k = 2) uncertainty of~0.3 kg/h, and established that any underlying systematic uncertainty in the DIAL measurements across this range of methane emissions is less than 4% (or 0.2 kg  ...  facility and an infrared differential absorption Lidar (DIAL) facility are presented, which have demonstrated the capability of the CRF to generate controlled methane emissions from 1.8 kg/h to 11 kg/h with  ...  The output signal is digitized by a transient recorder module which consists of a further amplification stage followed by an anti-aliasing filter, then a 12-bit Analogue-to-Digital convertor with a sampling  ... 
doi:10.3390/rs9090956 fatcat:fyzqlrws3rfqvcbx5fakrdhjwy

Supercritical CO2 extraction pilot plant design - towards IoT integration

2017 Tehnički Vjesnik  
Safety is the most important factor while dealing with SFE systems and the design of such equipment with full safety of process is very hard task.  ...  The developed SFE system (mechanical and electrical components) was compared with the existing commercial systems and its main advantages over the existing systems are presented.  ...  incorporates an analogue to digital converter with an accompanying circuitry (DS18B20 sensor).  ... 
doi:10.17559/tv-20150311100920 fatcat:sgimvnek3ndyxdy4m36swldcr4

Sensor Devices with High Metrological Reliability [chapter]

Kseniia Sapozhnikova, Roald Taymanov
2011 Nuclear Power - Control, Reliability and Human Factors  
At present, the traceability of measurements is provided by periodic calibrations or verifications (hereinafter both of these procedures will be referred to as calibrations).  ...  For example, the rate of fouling of a sensor surface can be reduced by polishing the s u r f a c e .  ...  Realization of the MDSC on the basis of temporal redundancy assumes application of more wideband or fast-response sensors than it is necessary for a non-intelligent analogue.  ... 
doi:10.5772/16573 fatcat:424pgxig4bdsxilb4gy65yjabi

Optical Detectors for Integration into a Low Cost Radiometric Device for In-Water Applications: HyDROW Performance Test at Loskop Dam

Naven Chetty, Arshath Ramkilowan, Derek J. Griffith, Meena D. Lysko
2013 European Journal of Remote Sensing  
Current commercial radiometers used for such applications are often too costly to purchase in numbers.  ...  HyDROW's performance has been evaluated against data registered with a commercially available Hyperspectral Tethered Spectral Radiometer Buoy (HyperTSRB) during a field campaign at Loskop Dam in South  ...  Both Ramkilowan and Griffith were employed at DPSS for the duration of this study.  ... 
doi:10.5721/eujrs20134620 fatcat:2zhz7d246rb3hmy5ic776urerq

Reference measurement procedures for the accurate determination of cell concentrations: present status and future developments/Referenzmessverfahren für die genaue Bestimmung von Zellkonzentrationen: Status und zukünftige Entwicklungen

Martin Kammel, Andreas Kummrow, Jörg Neukammer
2012 Laboratoriums Medizin  
To derive the so-called "conventional quantity value" of a measurand as target value for intra- or inter-laboratory quality assurance and to establish a traceability chain to the international System of  ...  Intra- and inter-laboratory comparability of measurement results is essential for patient safety.  ...  Employment or leadership: None declared. Honorarium: None declared.  ... 
doi:10.1515/jlm-2011-0008 fatcat:ct2nrzf425fcpchyohbfe6chw4
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