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- 2015
- Calibration process of OSL detectors
- Iodine-131
- OSL-BeO
- Dosimetry of staff and patients
- Optically Stimulated Luminescence (OSL)
- Akdeniz University
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - An Improved Mobile Calibration Standard for Transformer Loss Measurement Systems
摘要： Existing mobile calibration standard used for on-site calibration of transformer loss measurement systems has been upgraded. Master-slave configuration of programmable power sources is replaced with the external triggering and synchronization method which ensures the system stability below 50 ppm. Resolution in phase-settings between voltage and current generation is now improved about 2-digits down to 1 m°. And, measurement results are automatically evaluated with the corrected calibration values of system components.
关键词： on-site calibration,loss measurements,Distribution and power transformers,uncertainty,low-power factor
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - A Voltage Calibration Chain for Meters Used in Measurements of EV Inductive Power Charging
摘要： The inductive charging of electric vehicles requires specific measurement and calibration systems. In fact, the measurement of power on board involves DC signals, which are superimposed to a significant AC ripple up to or over 150 kHz, depending on the type of charging system. A calibration method that makes use of a phantom power, based on two independent but synchronized circuits, is considered, simulating the charging voltage and current. This paper describes in detail a solution in the realization of the voltage calibration chain, based on the use of a DC voltage calibrator, an injector and a voltage divider.
关键词： measurement techniques,electric vehicles,Calibration,voltage
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Research of the National Primary Standard of the High DC Voltage
摘要： This paper is devoted to the research of the metrological characteristics of the National primary standard of the unit of electrical DC voltage of Ukraine in the range from 1 to 180 kV (NPS). The research has allowed to reduce the step of measuring the DC voltage in the range from 10 kV to 180 kV from 10 kV to 1 kV and to reduce the standard uncertainty of the measurement of the high voltage at the NPS.
关键词： national primary standard of DC voltage,calibration of high voltage DC meters,Measurement of high DC voltage,uncertainty of measurement of DC voltage
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Models for Synchrophasor with Step Discontinuities in Magnitude and Phase, Their Parameter Estimation and Performance
摘要： This work proposes an alternative method to assess the calibration of phasor measurements units (PMUs) under magnitude and phase step conditions. Two parametric mathematical models are used to represent the signal and an iterative numerical method is used to best fit the model parameters to the samples. This approach avoids the adjustment of time windows around the instant of the discontinuity. The estimated parameters can be used to calculate a reference phasor with an appropriate definition.
关键词： dynamic tests,uncertainty,Calibration,phasor measurement units,synchrophasor
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Design and Modelling of a Shunt for Current Measurements at 10 a and up to 1 MHz: A Theoretical Approach
摘要： Electrical current shunts used as resistance standards in metrology laboratories are characterized by a broadband operating frequency bandwidth and are commonly calibrated up to 100 kHz. The use of a current shunt requires the preliminary knowledge of its magnitude deviation from DC and phase angle according to the frequency. The best magnitude performances published so far are limited to 2 μΩ/Ω at 100 kHz. In this paper, we present an innovative shunt design for current measurements at 10 A up to 1 MHz. The relative deviation from DC is less than 0.2 μΩ/Ω and 20 μΩ/Ω in magnitude at 100 kHz and 1 MHz respectively.
关键词： calibration,AC–DC transfer,Current shunts,3D thermal simulation,current measurement,3D electromagnetic simulation,uncertainty,AC current,modeling
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - A Simultaneously Comparison of Three Current Transformer Calibration Systems
摘要： This paper shows a novel method for simultaneous comparison of three current transformer calibration systems at power frequency. All three systems are designed for the calibration of high accuracy current transformers. The measuring method is also suitable for inter-laboratory comparisons of calibration systems/methods. The paper gives a description of the novel measuring method and the compared measuring systems. The comparison results are shown and discussed.
关键词： calibration,current comparator,AC current measurement,uncertainty of measurement,current transformer
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Bilateral Comparison LF Power Up to 100 kHz
摘要： Nowadays there is more need for traceability for distorted power waveforms. Therefore a power calibration system was developed at the European Standards Laboratory of Yokogawa Europe Solutions B.V. This system has the capability to calibrate electrical power meters from DC, 10 Hz up to 100 kHz. To evaluate the calibration system traceability, a bilateral comparison was carried out between the Yokogawa European Standards Laboratory and the National Standards Institute of Sweden (RISE).
关键词： Power system harmonics,Calibration,Uncertainty,Measurement,Power measurement
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Accurate High Direct Current Measurements for Industry
摘要： Calibration of high dc current transformers, dc ammeters, and dc current range extenders can be carried out simply using a high quality dc current transformer, an uncalibrated high current source and a calibrated low current source. The method, called the Current Reference Step Method, utilizes a buildup technique that exploits the ability that a dc current transformer possesses to accurately sum the currents linearity. its window with excellent differential through. Uncertainties of several parts per million in the applied high current can be achieved.
关键词： dc current transformer,Calibration,dc current and resistance measurement,dc current ratio
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Single-Photon Avalanche Detector Calibration at PTB
摘要： In this paper we present the traceable calibration of the detection efficiency of Si and InGaAs/InP single-photon avalanche detectors (SPADs). We describe the calibration facilities and the reference standard detectors used, as well as the traceability chain of the measurements to the primary standard for optical power (Cryogenic Radiometer) of PTB. As an example, the detection efficiency of a Si and InGaAs/InP SPAD detector measured at wavelengths of 850 nm and 1550 nm, respectively, for different photon flux rates is presented. The standard uncertainty of the measurements is ≤ 1 %.
关键词： Single-photon detectors,radiometry,calibration
更新于2025-09-10 09:29:36
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Mixed Uncertainty Propagation Method in S-Parameter Measurements
摘要： A new approach to uncertainty evaluation in scattering parameters measurements which is based on the well-established method of ripple and a subsequent uncertainty propagation through calibration algorithms is proposed. The procedure gives a practical alternative to guarantee traceability to Type-N and 3.5 mm connectors in OSM, SOLT and SOLR calibrations. Its implementation is described and tested.
关键词： calibration,traceability,vector network analyzer,measurement uncertainty,scattering parameters
更新于2025-09-10 09:29:36