TY - CONF A1 - Bremser, Wolfram A1 - Hässelbarth, Werner ED - Rossbach, M. T1 - Uncertainty-based calibration for wide measuring ranges T2 - 1st International Forum Intelligent Analytical Solutions CY - Jülich, Germany DA - 1998-09-24 PY - 1998 SN - 1618-2642 VL - 363 IS - 8 PB - Springer CY - Berlin AN - OPUS4-2586 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hässelbarth, Werner A1 - Bremser, Wolfram A1 - Pradel, Rita T1 - Uncertainty-based evaluation of certification study data PY - 1998 SN - 0937-0633 VL - 360 SP - 317 EP - 321 PB - Springer CY - Berlin AN - OPUS4-2588 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hässelbarth, Werner A1 - Bremser, Wolfram T1 - Derived measurement standards of reduced uncertainty - A contradiction? N2 - Zusammenfassung If the value of a derived measurement standard is assigned by comparison with a reference standard of the same quantity, the uncertainty is increased by the additional uncertainty on the difference measurement. This basic fact has lead to the general belief that the uncertainty of derived standards is always larger than that of the reference standards. However, if the value of a derived standard is assigned by comparison with several independent reference standards using an appropriate average, the increase of uncertainty due to the uncertainty on difference measurement may be counterbalanced by the the well-known decrease of uncertainty through averaging. The gain of accuracy made possible by this mechanism is restricted to second-generation standards. Further gain through iteration is prevented by correlation between standards derived from the same set of reference standards. As a consequence, the concept of metrological hierarchy levels, relating to traceability chains, becomes questionable for traceability networks. PY - 1998 U6 - https://doi.org/10.1007/s007690050257 SN - 0949-1775 SN - 1432-0517 VL - 3 IS - 8 SP - 337 EP - 339 PB - Springer CY - Berlin AN - OPUS4-2589 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kurschat, T. A1 - Brandt, O. A1 - Bremser, Wolfram A1 - Hässelbarth, Werner T1 - Analysis of the traceability chain and calculation of uncertainty of a high-pressure test facility for flow rate measurements T2 - 4th International Symposium on Fluid Flow Measurement CY - Denver, CO, USA DA - 1999-06-27 PY - 1999 SP - 1 EP - 12 CY - Denver, Colo. AN - OPUS4-2575 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Bremser, Wolfram A1 - Hässelbarth, Werner T1 - Uncertainty propagation via preparation, calibration and comparison steps in traceability networks T2 - 9e Congrès International Métrologie ; 9th International Metrology Congress CY - Bordeaux, France DA - 1999-10-18 PY - 1999 SN - 2-909430-88-X SP - 357 EP - 360 PB - MFQ, Collège Métrologie CY - Nanterre AN - OPUS4-2555 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hässelbarth, Werner T1 - Complementary use of inter-laboratory certification study data PY - 1999 SN - 0937-0633 VL - 365 SP - 574 EP - 576 PB - Springer CY - Berlin AN - OPUS4-2561 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Hässelbarth, Werner A1 - Bremser, Wolfram T1 - Derived measurement standards of reduced uncertainty - A contradiction? T2 - 9e Congrès International Métrologie ; 9th International Metrology Congress CY - Bordeaux, France DA - 1999-10-18 PY - 1999 SN - 2-909430-88-X SP - 651 EP - 654 PB - MFQ, Collège Métrologie CY - Nanterre AN - OPUS4-2562 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hässelbarth, Werner T1 - Eurachem committee meeting report PY - 1999 SN - 0949-1775 SN - 1432-0517 VL - 4 SP - 483 EP - 484 PB - Springer CY - Berlin AN - OPUS4-2566 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hässelbarth, Werner A1 - Zschunke, Adolf A1 - Felber, H. A1 - Wampfler, B. T1 - Shared responsibility for metrology in chemistry PY - 1999 SN - 0949-1775 SN - 1432-0517 VL - 4 SP - 158 PB - Springer CY - Berlin AN - OPUS4-2567 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hässelbarth, Werner T1 - Traceability in the analysis of natural gas T2 - International Gas Analysis Symposium CY - Eindhoven, The Netherlands DA - 1999-11-07 PY - 1999 AN - OPUS4-2568 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -