– At the National Institute of Metrological Research (INRIM) a comparison between the measurements of a commercial high resistance bridge and two validated high resistance methods from 100 GΩ to 1 PΩ has been performed. The systems showed satisfactory agreement except at 1 PΩ. The commercial bridge recently has been improved by means of a new software revised by the manufacturer according to the INRIM requests. This software allows the automatic calibration of the DC Voltage sources of the bridge, with a high precision DMM, taking into account these calibration results in the subsequent resistors calibrations. With the previous software version, bridge measurements at INRIM were limited at 10 TΩ. Also the bridge uncertainty specifications were updated, now being more reliable with respect to their first issue.

Measurement comparison between a commercial high resistance bridge and validated systems at ultra-high resistance values / Galliana, Flavio; Capra, P.; Mihai, Iulian. - (2020), pp. 379-383. ((Intervento presentato al convegno 24th IMEKO TC4 International Symposium 22nd International Workshop on ADC and DAC Modelling and Testing IMEKO TC-4 2020 tenutosi a PALERMO ONLINE nel 14-16 SETTEMBRE 2020.

Measurement comparison between a commercial high resistance bridge and validated systems at ultra-high resistance values

FLAVIO GALLIANA
Conceptualization
;
P. CAPRA
Membro del Collaboration Group
;
IULIAN MIHAI
Membro del Collaboration Group
2020

Abstract

– At the National Institute of Metrological Research (INRIM) a comparison between the measurements of a commercial high resistance bridge and two validated high resistance methods from 100 GΩ to 1 PΩ has been performed. The systems showed satisfactory agreement except at 1 PΩ. The commercial bridge recently has been improved by means of a new software revised by the manufacturer according to the INRIM requests. This software allows the automatic calibration of the DC Voltage sources of the bridge, with a high precision DMM, taking into account these calibration results in the subsequent resistors calibrations. With the previous software version, bridge measurements at INRIM were limited at 10 TΩ. Also the bridge uncertainty specifications were updated, now being more reliable with respect to their first issue.
24th IMEKO TC4 International Symposium 22nd International Workshop on ADC and DAC Modelling and Testing IMEKO TC-4 2020
14-16 SETTEMBRE 2020
PALERMO ONLINE
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/63950
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