Comparison of four QHR systems within one month using a temperatureand pressure stabilized 100-Ω resistor |
| |
| Authors: | Satrapinski A Seppa H Schumacher B Warnecke P Delahaye F Poirier W Piquemal F |
| |
| Affiliation: | Center for Metrol. & Accreditation, Espoo; |
| |
| Abstract: | We have carried out a resistance comparison of four QHR systems using a 100-Ω resistor in a temperature-controlled and hermetically sealed enclosure, the comparison was performed in November and December 1998, the participants were Bureau International des Poids et Mesures (BIPM), Bureau National de Metrology-Laboratoire Central des Industries Electroniques (BNM-LCIE) France, Physikalisch-Technische Bundesanstalt (PTB) Germany, and Valtion Teknillinen Tutkimuskeskus (VTT Automation) Finland, acting as a pilot laboratory. The comparison results agree within 3 parts in 109 with a relative combined standard uncertainty of ±1×10-8 |
| |
| Keywords: | |
|
|
