TUBITAK-UME - TÜBİTAK National Metrology national standard for gas flow rate measurement is the Bell Prover. Gas flow rate in Institute the range of (0.2 to 100) m3/h is measured by this system with an uncertainty of 0.05 %. It is calibrated at UME Dimensional and Time & Frequency Laboratories with primary standards. HELLENIC INSTITUTE OF METROLOGY The reference facility used in this project is a volumetric device working on a positive Mechanical Measurements Department displacement principle. Therefore, the reference Fluid Flow & Volume Laboratory flow rate was expressed in [sm3/h] which means Industrial Area of Thessaloniki that the actual flow rate was corrected to user Block 45. Sindos. GR-57 022. GREECE defined STP conditions. In this case the standard conditions were 101325 Pa and 20 °C. The flow rate measured by the TS was also corrected to standard conditions and therefore also expressed in [sm3/h]. Ambient air is sucked by a fan through the standard meter and afterwards through the IMBiH – Bosnia and Herzegovina meter under test. The test was performed at SARAJEVOGAS, LABORATORIJ ZA ISPITIVANJE I atmospheric conditions with air temperature of KALIBRACIJU MJERNIH INSTRUMENATA ZA GAS about 21°C. System is automated by software Rajlovacka bb, 71000 Sarajevo and the flow rate is adjusted by regulation of the rotation speed of the fan and electromotive valve. After reaching the stable flow rate, the test was performed during minimum 360 seconds. The error of the meter under test was calculated after correction of indicated volume for pressure and temperature conditions. Standard meters used for this inter-laboratory comparison are rotary gas meters G16 in the range: (0.35 – 25) m3/h and G40 in the range: (0.5 – 65) m3/h and turbine gas meter G250 in the range (20 – 400) m3/h.
TUBITAK-UME - TÜBİTAK National Metrology Institute national standard for gas flow rate measurement is the Bell Prover. Gas flow rate in the range of (0.2 to 100) m3/h is measured by this system with an uncertainty of 0.05 %. It is calibrated at UME Dimensional and Time & Frequency Laboratories with primary standards. HELLENIC INSTITUTE OF METROLOGY Mechanical Measurements Department Fluid Flow & Volume Laboratory Industrial Area of Thessaloniki Block 45. Sindos. GR-57 022. GREECE The reference facility used in this project is a volumetric device working on a positive displacement principle. Therefore, the reference flow rate was expressed in [sm3/h] which means that the actual flow rate was corrected to user defined STP conditions. In this case the standard conditions were 101325 Pa and 20 °C. The flow rate measured by the TS was also corrected to standard conditions and therefore also expressed in [sm3/h]. IMBiH – Bosnia and Herzegovina SARAJEVOGAS, LABORATORIJ ZA ISPITIVANJE I KALIBRACIJU MJERNIH INSTRUMENATA ZA GAS Rajlovacka bb, 71000 Sarajevo Ambient air is sucked by a fan through the standard meter and afterwards through the meter under test. The test was performed at atmospheric conditions with air temperature of about 21°C. System is automated by software and the flow rate is adjusted by regulation of the rotation speed of the fan and electromotive valve. After reaching the stable flow rate, the test was performed during minimum 360 seconds. The error of the meter under test was calculated after correction of indicated volume for pressure and temperature conditions. Standard meters used for this inter-laboratory comparison are rotary gas meters G16 in the range: (0.35 – 25) m3/h and G40 in the range: (0.5 – 65) m3/h and turbine gas meter G250 in the range (20 – 400) m3/h.
EURAMET-P1180_FLOW_Final_Report.docx