A high precision calibration setup for low-current meters in the range of 10 pA to 1 fA

Kim, Wan-Seop; Kim, Mun-Seog; Kim, Kyu‐Tae; Chong, Yonuk; Kim, Hanjun; Kim, Myung-Soo; Tauscher, H.N.

doi:10.1109/cpem.2008.4574801

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…In order to develop this system, many approaches are possible. The Consultative Committee for Electricity and Magnetism (CCEM) of the International Bureau of Weights and Measures (BIPM) [4] shows three possible methods to achieve the realization of the ampere, a) Ohm's law method [3,5], b) the capacitor-charging method [6][7][8], and c) the single-electron transport method [9][10][11]. Another method, the active transresistance (ULCA), is accepted and, despite of not being mentioned by the BIPM in [4], its traceability is based on the quantum Hall effect and the Josephson effect.…”

Section: Introductionmentioning

confidence: 99%

A reference system to calibrate low-current meters in the range of picoamperes to microamperes

Pinto,

Ventura,

Landim

et al. 2023

J. Phys.: Conf. Ser.

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The calibration of low current meters in the range of picoamperes up to microamperes is important for the electronics industry, for the photometry area, and especially for the ionizing radiation area. In Brazil, traceability is limited to ten microamperes. In this paper, a reference system using Ohm’s law method is presented. It was possible to calibrate an electrometer between 2 picoamperes and 20 microamperes, with uncertainties between 0.70 % and 0.000060 %, respectively, as well as to validate the developed system and Ohm’s law method by comparing it with the method used to calibrate values above 10 microamperes, in an intralaboratory comparison.

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Section: Introductionmentioning

confidence: 99%

A reference system to calibrate low-current meters in the range of picoamperes to microamperes

Pinto,

Ventura,

Landim

et al. 2023

J. Phys.: Conf. Ser.

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show abstract

“…The obtained absolute current can be used to calibrate low-current meters. A calibration setup using this method was built and reported for the calibration of picoammeters [3]. Using offset current compensation and also a galvanic (opto-coupling) isolation between the computer and the ramp generator, a current calibration uncertainty of 30 × 10 −6 (k = 1) was reported at an output current of 10 pA.…”

Section: Introductionmentioning

confidence: 99%

Development of an in situ calibration method for current-to-voltage converters for high-accuracy SI-traceable low dc current measurements

Eppeldauer¹,

Yoon²,

Jarrett³

et al. 2013

Metrologia

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For photocurrent measurements with low uncertainties, wide dynamic range reference current-to-voltage converters and a new converter calibration method have been developed at the National Institute of Standards and Technology (NIST). The high-feedback resistors of a reference converter were in situ calibrated on a high-resistivity, printed circuit board placed in an electrically shielded box electrically isolated from the operational amplifier using jumpers. The feedback resistors, prior to their installation, were characterized, selected and heat treated. The circuit board was cleaned with solvents, and the in situ resistors were calibrated using measurement systems for 10 k to 10 G standard resistors. We demonstrate that dc currents from 1 nA to 100 µA can be measured with uncertainties of 55 × 10 −6 (k = 2) or lower, which are lower in uncertainties than any commercial device by factors of 10 to 30 at the same current setting. The internal (NIST) validations of the reference converter are described.

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Calibrations of current-to-voltage transimpedance amplifiers using electrical standards

et al. 2010

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A high precision calibration setup for low-current meters in the range of 10 pA to 1 fA

Cited by 5 publications

References 4 publications

A reference system to calibrate low-current meters in the range of picoamperes to microamperes

A reference system to calibrate low-current meters in the range of picoamperes to microamperes

Development of an in situ calibration method for current-to-voltage converters for high-accuracy SI-traceable low dc current measurements

Calibrations of current-to-voltage transimpedance amplifiers using electrical standards

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