Title :
A measurement setup to calibrate picoammeters in dc current in the range 100 pA ÷100 nA
Author :
Capra, P.P. ; Galliana, F. ; Astrua, M.
Author_Institution :
Nat. Inst. of Metrol. Res., Turin, Italy
Abstract :
This paper describes a measurement setup for the calibration of pico-ammeters in dc current in the range 100 pA divide 100 nA. The system is based on a 100 MOmega Hamon network developed at INRIM to improve the traceability level of the maintained 1 GOmega standard. Besides the Hamon network, the measurement system consists of a precision dc voltage source and an electronic circuit used as voltage guard driver. A comparison with a different technique and an uncertainties considerations for the system and are also reported.
Keywords :
ammeters; calibration; electric current measurement; Hamon network; calibration; current 100 pA to 100 nA; dc current; electronic circuit; measurement setup; picoammeters; precision dc voltage source; resistance 1 Gohm; resistance 100 Mohm; traceability level; uncertainties; voltage guard driver; Calibration; Current measurement; Detectors; Dielectric measurements; Driver circuits; Electrical resistance measurement; Performance evaluation; Resistors; Temperature distribution; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location :
Broomfield, CO
Print_ISBN :
978-1-4244-2399-6
Electronic_ISBN :
978-1-4244-2400-9
DOI :
10.1109/CPEM.2008.4574911
