Title :
Temperature control system for inductance standard
Author :
Gulmez, Yakup ; Gulmez, C. ; Turhan, E. ; Ozkan, T.
Author_Institution :
Tubitak Ulusal Metrol. Enstitusu, Kocaeli, Turkey
Abstract :
The construction of the temperature controlled inductor at UME, based on the electronic principle of the PI (proportional-integral) method which gives 1 mK stability at the set point is reported. The aim of this work is to reduce the uncertainty component which mostly originated from the temperature dependence of the inductance standard for primary level measurements. Some experimental results are presented and discussed.
Keywords :
Bridge circuits; Error compensation; Feedback; Inductance measurement; Inductors; Measurement uncertainty; Temperature control; Transfer standards; Two-term control; Maxwell-Wien bridge; NTC resistive sensors; PI compensation; Wheatstone bridge; feedback loop; inductance standard; instrumentation amplifier; offset errors elimination; primary level measurements; proportional-integral method; set point; temperature control system; temperature controlled inductor; temperature stability; thermostatic portable standard; uncertainty component; Bridge circuits; Control systems; Inductance; Inductors; Instruments; Land surface temperature; Resistors; Temperature control; Temperature sensors; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850918
