A TEMPERATURE VARIABLE HIGH ACCURACY 10 K Omega RESISTOR

作者：Capra Paolo; Cassiago Cristina; Galliana Flavio^*; Astrua Milena

来源：Metrology and Measurement Systems, 2009, 16(1): 183-191.

A temperature-variable high accuracy (TVHAR) 10 k Omega resistor has been developed at the National Institute of Metrological Research, (INRIM), in order to transfer the traceability to high accuracy multifunction instruments used in the accredited calibration laboratories. The TVHAR consists of ten 100 k Omega) nominal value resistors inserted in a copper block and connected in a parallel configuration. The thermal stability of the copper block is obtained with a temperature controller. In this paper details of the development of the TVHAR and of its thermal behaviour are reported. From preliminary results its relative short-time stability (2h) is on the order of a few parts in 10(-8), a negligible temperature coefficient around 23 degrees C and a power coefficient on the order of -4x10(-6)/W.

• 出版日期2009
• 单位中国计量科学研究院