20.500.12556/RUL-137024 Time-correction model based on diverter speed for a pVTt gas flow primary standard The volumetric primary standard with a constant volume (pVTt) determines the flow rate from the rate of change of gas density in the defined measuring volume. The key element of the measuring system that uses the flying start–stop method is a diverter. This paper presents a time correction model that adapts the correction according to the diverting speed implemented in our pVTt system developed for flow rates smaller than 12 mg min$^{−1}$. A detailed study of the diverter’s effects on the effective collection time and two methods for determining the time correction are presented. One is based on the ISO 4185 standard and the other on measurements of the dynamic pressure upstream of the diverter. A set of correction time measurements were made at different diversion speeds to define the correction model at a flow rate of 9 mg min$^{−1}$. The results show very good agreement between the measurements with both methods and the defined correction model. Additional measurements were made at smaller flow rates and the results indicate the independence of the time correction from the measured flow rate. flow rate measurement time correction diverter pVTt merjenje pretoka časovna korekcija preklopni element true false true Angleški jezik Slovenski jezik Članek v reviji 2022-05-30 08:13:50 2022-05-30 08:13:53 2025-02-06 09:24:12 0000-00-00 00:00:00 2022 0 0 12 str. iss. 11, art. 4001 Vol. 22 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.57:681.586 1424-8220 10.3390/s22114001 109539075 Zibret,_Bobovnik,_Kutin_-_Time-correction_model_based_on_diverter_speed_for_a_pVTt_gas_flow_primary_standard.pdf Zibret,_Bobovnik,_Kutin_-_Time-correction_model_based_on_diverter_speed_for_a_pVTt_gas_flow_primary_standard.pdf 1 A6D91B13BAD98FB768D07C7CCD4A53CE 19c80d3c32df2fd4dd3b2ef9c85f57474e8a26f83ccfc71417de0eb20d6f56c2 07377e33-dfe0-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=156875 https://www.mdpi.com/1424-8220/22/11/4001 1 89b5c60a-dfdf-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=156874 Fakulteta za strojništvo 0 0 0