Title :
Calibration of multimeters as voltage ratio standards
Author :
Sosso, A. ; Cerri, R.
Author_Institution :
Ist. Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy
Abstract :
We report on measurements for the evaluation of the linearity of DVMs in use in our laboratories, aimed at determining the performances in the /spl plusmn/V range of commercial multimeters as voltage ratio standard. The evaluation of deviations from linearity in the selected range becomes important in measurements of resistance ratios, where voltage limitations may exist. After calibration, uncertainty below 0.1 ppm can be obtained.
Keywords :
calibration; digital multimeters; digital voltmeters; electric resistance measurement; measurement standards; measurement uncertainty; voltage measurement; DVM linearity; deviations from linearity; low uncertainty; multimeters calibration; resistance ratios; voltage ratio standards; Automatic testing; Calibration; Electrical resistance measurement; Laboratories; Linearity; Measurement standards; Metrology; Performance evaluation; Resistors; Voltage measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851032
