Title :
AC-DC voltage transfer difference due to Seebeck effect in thermal converters
Author :
Takahashi, K. ; Sasaki, Hiromu ; Inglis, B.D. ; Klonz, M.
Author_Institution :
Japan Electron. Meters Inspection Corp., Tokyo, Japan
Abstract :
The AC-DC transfer difference of a single-junction thermal converter can be evaluated with an uncertainty of the order of 0.1 ppm using a fast-reversed DC source. At this level of uncertainty the dependence of the AC-DC voltage transfer difference on the value of the range resistor has been measured. It is shown that the Seebeck effect in the heater/heater support lead junction is responsible for this behavior.
Keywords :
Seebeck effect; convertors; measurement errors; measurement uncertainty; transfer standards; voltage measurement; AC-DC voltage transfer difference; Seebeck effect; fast-reversed DC source; heater/heater support lead junction; range resistor value; single-junction thermal converters; transfer errors; transfer standards; uncertainty level; Analog-digital conversion; Circuits; Current measurement; Dielectric losses; Frequency conversion; Heat transfer; Laboratories; Thermal conductivity; Thermoelectricity; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699842
