In the framework of the preparation of the National Institute of Metrological Research (INRIM) to its participation at the "Supplementary Comparison EURAMET.EM-S32 Comparison of Resistance Standards at 1 T Omega and 100 T Omega," an evaluation of two measurement techniques for high resistance measurements at INRIM has been made. The first method, working between 10 M Omega and 1 T Omega, is based on a digital multimeter and on a dc voltage (dcv) calibrator, the second, working up to 100 T Omega, is based on a modified Wheatstone bridge with two programmable dcv calibrators in two arms of the bridge and a programmable electrometer as null detector. A description of both methods, a detailed uncertainties budget at 1 T Omega at 1000 V level according to the ISO Guide to the Expression of Uncertainty in Measurements, and the comparison of the results at 100 G Omega and at 1 T Omega are reported.
EVALUATION OF TWO ALTERNATIVE METHODS TO CALIBRATE ULTRA-HIGH VALUE RESISTORS AT INRIM / Galliana, Flavio; Capra, PIER PAOLO; Gasparotto, E.. - In: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. - ISSN 0018-9456. - 60:6(2011), pp. 965-970. [10.1109/TIM.2010.2060226]
EVALUATION OF TWO ALTERNATIVE METHODS TO CALIBRATE ULTRA-HIGH VALUE RESISTORS AT INRIM
GALLIANA, FLAVIO;CAPRA, PIER PAOLO;Gasparotto E.
2011
Abstract
In the framework of the preparation of the National Institute of Metrological Research (INRIM) to its participation at the "Supplementary Comparison EURAMET.EM-S32 Comparison of Resistance Standards at 1 T Omega and 100 T Omega," an evaluation of two measurement techniques for high resistance measurements at INRIM has been made. The first method, working between 10 M Omega and 1 T Omega, is based on a digital multimeter and on a dc voltage (dcv) calibrator, the second, working up to 100 T Omega, is based on a modified Wheatstone bridge with two programmable dcv calibrators in two arms of the bridge and a programmable electrometer as null detector. A description of both methods, a detailed uncertainties budget at 1 T Omega at 1000 V level according to the ISO Guide to the Expression of Uncertainty in Measurements, and the comparison of the results at 100 G Omega and at 1 T Omega are reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
