کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
728024 892818 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Metrological management of the high dc resistance scale at INRIM
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Metrological management of the high dc resistance scale at INRIM
چکیده انگلیسی

In the framework of the revision of the high dc resistance scale from 10 kΩ to 1 TΩ at National Institute of Metrological Research (INRIM) a measurement method for calibration of high value resistors based on the use of a digital multimeter (DMM) and of a dc voltage calibrator (DCVC) was projected, developed and characterized. A method based on the Hamon scaling technique was revised and extended to 1 GΩ. Two other methods, based respectively on a modified Wheatstone bridge and on a current comparator bridge, were implemented. A new 100 MΩ step Hamon standard, a humidity generator to characterize high value resistors vs. relative humidity and a scanner for high resistances were developed and characterized. The relative 2σ best measurement capabilities, obtained in the range 10 kΩ ÷ 1 TΩ at INRIM with all these methods, span from 2.0 × 10−7 of the 10 kΩ standard resistor at the measurement voltage of 10 V to 1.0 × 10−3 of the 1 TΩ standard resistor at a voltage of 100 V. The relative standard uncertainties of the utilized methods at INRIM are summarized.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 42, Issue 2, February 2009, Pages 314–321
نویسندگان
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