Title :
A reevaluation of the NIST low-frequency standards for AC-DC difference in the voltage range 0.6-100 V
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fDate :
12/1/1996 12:00:00 AM
Abstract :
A reevaluation of the NIST standards of ac-dc difference was undertaken in an effort to reduce the calibration uncertainty offered by NIST for thermal voltage converters (TVC´s) at frequencies below 100 Hz. This paper describes the measurements taken in support of this effort, as well as the devices used for the reevaluation process and the analysis of the uncertainty of the measurements. This reevaluation of the NIST low-frequency standards will permit a significant reduction in uncertainty for ac-dc difference calibrations at 10 Hz in the voltage range from 0.6-100 V
Keywords :
calibration; convertors; electric current measurement; error analysis; measurement errors; measurement standards; voltage measurement; 0.6 to 100 V; 10 Hz; 100 Hz; AC-DC difference; NIST low-frequency standards; calibration; calibration uncertainty; thermal voltage converters; Analog-digital conversion; Frequency conversion; Frequency measurement; Measurement standards; NIST; Tellurium; Temperature; Thermal conductivity; Thermal resistance; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
