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Study on the Implementation of Single Pressure Balance with Iterative A-B-A-B-A Method in the Differential Pressure Calibration of Ventilator Tester

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Abstract

Differential pressure measurement is of increasing importance for many industrial applications, for example in oil and gas industry, as well as in the medical application such as the differential pressure application in the ventilator and ventilator tester. The demands of accuracy in differential pressure measurement are increasing as well through the traceability chain into the primary standard. In this study, two differential pressure calibration methods have been successfully implemented in the “Standar Nasional Satuan Ukuran-Badan Standardisasi Nasional (SNSU-BSN)” as the national metrology institute of Indonesia to calibrate the differential pressure of the ventilator tester. The first method is by generating the differential pressure reference value from two pressure balances and the second one is by using a single pressure balance with the aid of air reservoir, precise digital pressure monitor, and the iterative A-B-A-B-A methods from the previous study. Both methods measurement results show good agreement by each other with the Normalized Error less than 1.0 from 0 to 100 mbar. The major uncertainty contributions in both methods came from the hysteresis of the DUT. However, the expanded uncertainty in single pressure balance method is larger than the double pressure balance method due to the instability of the pressure line that affects the variation of DUT indication. It can be concluded that either two pressure balances or single pressure balance can be used by the laboratory for differential pressure calibration, regardless by considering the available facility and the ease of performing the calibration.

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Acknowledgements

The author wishes to express his special thanks to “Beasiswa Saintek Pusat Pendidikan dan Pelatihan Kementerian Riset dan Teknologi/Badan Riset dan Inovasi Nasional”, Mr. Pierre Otal from LNE-France for his contribution in the training of Differential and Negative Pressure which was held by EU-TSP2 in 2015. Special thanks also to the management of SNSU-BSN for providing and maintaining the facilities in the pressure laboratory.

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Authors and Affiliations

  1. National Standardization Agency of Indonesia (BSN), Kompleks PUSPIPTEK Gedung 420, Tangerang Selatan, Banten, Indonesia

    Adindra Vickar Ega & Gigin Ginanjar

  2. Department of Electrical Engineering and Information Technology, Faculty of Engineering, Gadjah Mada University (UGM), Jl. Grafika No. 2 Kampus UGM, Yogyakarta, Indonesia

    Adindra Vickar Ega, Eka Firmansyah & Dzuhri Radityo Utomo

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  1. Adindra Vickar Ega
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  2. Gigin Ginanjar
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  3. Eka Firmansyah
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  4. Dzuhri Radityo Utomo
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Correspondence to Adindra Vickar Ega.

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Ega, A.V., Ginanjar, G., Firmansyah, E. et al. Study on the Implementation of Single Pressure Balance with Iterative A-B-A-B-A Method in the Differential Pressure Calibration of Ventilator Tester. MAPAN 36, 629–638 (2021). https://doi.org/10.1007/s12647-021-00499-1

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