A CURRENT SOURCE FOR CALIBRATION OF LOW-CURRENT METERS |
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| Luca Callegaro, Vincenzo D’Elia |
- Abstract:
- The need for accurate calibration of current meters in the picoampere range is continuously increasing. A traceable current source for calibration of meters in the 100 fA – 100 pA current range is here presented. The source is based on a low-frequency generator ramp generator, which charges and discharges a gas-dielectric capacitor. Current traceability is given by the measurement of voltage parameters with a sampling voltmeter, and by calibration of the capacitor at audio frequency. The source has been employed in the EUROMET.EM-S24 "Comparison of small current sources" supplementary comparison.
- Keywords:
- current measurement, calibration, signal generators
- Download:
- PWC-2006-TC4-003u.pdf
- DOI:
- -
- Event details
- Event name:
- XVIII IMEKO World Congress
- Title:
Metrology for a Sustainable Development
- Place:
- Rio de Janeiro, BRAZIL
- Time:
- 17 September 2006 - 22 September 2006