Title :
AC-DC voltage transfer difference due to Seebeck effect in thermal converters
Author :
Takahshi, Kuniyuki ; Sasaki, Hitoshi ; Inglis, Barry D. ; Klonz, Manfred
Author_Institution :
Japan Electr. Meters Inspection Corp., Tokyo, Japan
fDate :
4/1/1999 12:00:00 AM
Abstract :
The thermoelectric transfer difference of Thermal Converters (TCs) can be evaluated in both current mode and voltage mode, using a fast-reversed dc (FRDC) source. Some types of TCs show differences in the thermoelectric transfer difference between voltage and current mode as large as some parts in 106. In order to investigate the origin of the discrepancy, the change of the thermoelectric transfer difference with the value of a resistor in series with the thermal converter has been measured. The result was in good agreement with an assumption that the Seebeck effect in the heater/heater support junction is the main source of the voltage transfer difference
Keywords :
Seebeck effect; convertors; thermopiles; transfer standards; voltage measurement; AC-DC voltage transfer difference; Seebeck effect; current mode; fast-reversed DC source; heater/heater support junction; relative Peltier coefficient; resistor in series; thermal converters; thermoelectric transfer difference; transfer standards; voltage mode; Analog-digital conversion; Circuits; Current measurement; Frequency conversion; Heat transfer; Laboratories; Performance evaluation; Resistors; Thermoelectricity; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
