- Tytuł:
- Period verification device for ventilation rate standard rods based on a digital thermal flowmeter
- Autorzy:
-
Hu, Jiacheng
Sha, Ying
Cai, Jinhui
Liu, Ying
Liu, Suijun - Powiązania:
- https://bibliotekanauki.pl/articles/2052108.pdf
- Data publikacji:
- 2022
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
ventilation rate standard rod
period verification
numerical simulation
digital thermal flowmeter
micro-pressure difference adjustment - Opis:
- Ventilation rate is a physical index that is strictly controlled during cigarette manufacturing because an abnormal ventilation rate can affect the release of mainstream smoke, tar, and other components harmful to human health. Therefore, the standard rod is used for measuring the ventilation rate, which necessitates accurate and effective periodic inspections. In this study, we designed and built a set of special tobacco ventilation rate standard rods to assess the standard device during its verification period and used a digital thermal flowmeter as the flow standard.We determined the micro-pressure adjustment interval through fluid simulation, and conducted an experimental verification based on the simulation results. At the adjustment point where the differential pressure value was 0 Pa, the period verification device was tested under the standard values of 27.38%, 58.83%, and 71.95%. The results show that the measurement errors of the device are -0.42%, 0.55%, and -0.13% respectively, which all meet the verification regulation requirements and indicate that the device is applicable in practical situations.
- Źródło:
-
Metrology and Measurement Systems; 2022, 29, 1; 231-244
0860-8229 - Pojawia się w:
- Metrology and Measurement Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł