Inter-laboratories comparison at 100GΩ and 1TΩ level to evaluate the traceability transfer from INRIM in the field of high dc resistance

Galliana, Flavio; Capra, Pier Paolo; Gasparotto, E.

doi:10.1016/j.measurement.2011.10.028

Cited by 16 publications

(12 citation statements)

References 7 publications

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“…Normally, when in an ILC are involved an NMI and calibration Laboratories belonging to the same country, it is important to correctly evaluate the possible correlation between the measurements of the NMI and the secondary Laboratories as normally the Laboratories send their reference standards to the NMI for calibration. Suggestion for this evaluation can be found in [1,[5][6][7]10]. The ILC results are reported in Tables 1-3 Table 3.…”

Section: Analysis Of the Resultsmentioning

confidence: 99%

“…Another kind of ILCs involves a NMI and secondary Laboratories of the same country accredited or not, so belonging to the same measurement system. The ILC reference values of these comparisons are the measurement values given by the NMI that is normally at an upper metrological level with respect the other Laboratories [5][6][7][8]. In this paper an ILC, made according to the EN ISO/IEC 17043 international Standard [9] between the National Institute of Metrological Research (INRIM) and the European space research and technology Centre (ESA-ESTEC) on DC Voltage, DC Resistance and Electrical Capacitance is presented.…”

Section: Introductionmentioning

confidence: 99%

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Inter-laboratory measurement comparison between INRIM and ESA on electrical quantities

Galliana

Capra

Cerri

et al. 2017

18th International Congress of Metrology

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Abstract. Inter-laboratory comparisons (ILCs) are an effective mean to establish the compatibility of the measurements among laboratories. As consequence they are a mean to assure confidence in the competence and in the correctness of the dissemination processes from national Standards in different countries. This paper refers on a ILC between the National Institute of Metrological Research (INRIM-Italy) and the European space research and technology Centre (ESA-ESTEC), belonging to two different countries, on DC Voltage, DC Resistance and Electrical Capacitance carried out in 2016. The comparison showed a satisfactory agreement between the results of the two Laboratories.

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Section: Analysis Of the Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inter-laboratory measurement comparison between INRIM and ESA on electrical quantities

Galliana

Capra

Cerri

et al. 2017

18th International Congress of Metrology

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show abstract

“…To evaluate the measurement comparison the results of each measurement point were analyzed in the same way of [5,6] …”

Section: Analysis Of the Resultsmentioning

confidence: 99%

Analysis of a national low dc resistance inter-laboratories comparison

Galliana

Gasparotto

Capra

2013

16th International Congress of Metrology

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Abstract. In this paper the description of an inter-laboratories comparison between the National Institute of Metrological Research (INRIM) and nineteen Italian Secondary Calibration Electrical Laboratories, is given along with its main results in graphical way. The transportable standards were three Tinsley four terminal standard resistors to be calibrated in oil respectively at 5 A and 20 A (1 mΩ), 1 A and 5 A (10 mΩ), 0.1 A and 1 A (100 mΩ). The comparison results were satisfactory, except only in a case of a Laboratory for which these measurements were outside its accreditation fields.

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“…Real behaviour is ignored as the undesired effects are negligible for low

R_{x}

resistance or high

V_{i}

voltage values. Actually, a measurement technique for some instruments consists of increasing

V_{i}

(up to 1000 V in some cases) when

R_{x}

increases [24] so that undesired effects are always negligible. In the proposed circuit, due to the design consideration of low power, voltage

V_{i}

is fixed (5 V) for all resistance measurements, and thus real behaviour must be considered since it is not negligible for high resistance.…”

Section: Resistance Measurement: Analog and Digital Circuitsmentioning

confidence: 99%

Novel Resistance Measurement Method: Analysis of Accuracy and Thermal Dependence with Applications in Fiber Materials

Casans

Muñoz

Iakymchuk

2016

Sensors

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Material resistance is important since different physicochemical properties can be extracted from it. This work describes a novel resistance measurement method valid for a wide range of resistance values up to 100 GΩ at a low powered, small sized, digitally controlled and wireless communicated device. The analog and digital circuits of the design are described, analysing the main error sources affecting the accuracy. Accuracy and extended uncertainty are obtained for a pattern decade box, showing a maximum of 1% accuracy for temperatures below 30 ∘C in the range from 1 MΩ to 100 GΩ. Thermal analysis showed stability up to 50 ∘C for values below 10 GΩ and systematic deviations for higher values. Power supply Vi applied to the measurement probes is also analysed, showing no differences in case of the pattern decade box, except for resistance values above 10 GΩ and temperatures above 35 ∘C. To evaluate the circuit behaviour under fiber materials, an 11-day drying process in timber from four species (Oregon pine-Pseudotsuga menziesii, cedar-Cedrus atlantica, ash-Fraxinus excelsior, chestnut-Castanea sativa) was monitored. Results show that the circuit, as expected, provides different resistance values (they need individual conversion curves) for different species and the same ambient conditions. Additionally, it was found that, contrary to the decade box analysis, Vi affects the resistance value due to material properties. In summary, the proposed circuit is able to accurately measure material resistance that can be further related to material properties.

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Inter-laboratories comparison at 100GΩ and 1TΩ level to evaluate the traceability transfer from INRIM in the field of high dc resistance

Cited by 16 publications

References 7 publications

Inter-laboratory measurement comparison between INRIM and ESA on electrical quantities

Inter-laboratory measurement comparison between INRIM and ESA on electrical quantities

Analysis of a national low dc resistance inter-laboratories comparison

Novel Resistance Measurement Method: Analysis of Accuracy and Thermal Dependence with Applications in Fiber Materials

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