THE BIAS OF WEB BASED RAIN GAUGE CALIBRATOR DUE TO BUBBLES
| Main Authors: | Wijonarko, Sensus; Research Center for Physics, Rustandi, Dadang; Development Unit for Instrumentation, Maftukhah, Tatik; Research Ceneter for Physics, Mahmudi, Mahmudi; Research Center for Testing Technology, Sirenden, Bernadus H; Research Center for Physics, Prakosa, Jalu Ahmad; Research Center for Physics, Purwowibowo, Purwowibowo; Research Center for Physics |
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| Other Authors: | LIPI |
| Format: | Article info Research application/pdf Journal |
| Bahasa: | eng |
| Terbitan: |
LIPI Press, Anggota IKAPI
, 2020
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| Subjects: | |
| Online Access: |
http://jurnalinstrumentasi.bsn.go.id/index.php/ji/article/view/215 http://jurnalinstrumentasi.bsn.go.id/index.php/ji/article/view/215/pdf_62 |
Daftar Isi:
- This study was devoted to investigate the bias due to entrapped air - in the cylindrical tube water - to a web based rain gauge calibrator (WBRGC). This study was carried out in laboratory temperature around 25 °C using experiment method, especially by comparing the massof the water with and without bubbles. The entrapped airusedthe space for1.57 gof 1009 g ofwater if there were no bubbles, so this condition madebiasaround - 0.16 %.This bias was very significant in contributing the uncertainty of WBRGC, where in this case was 3 ml for 966 ml of water (0.31 %). Hence, this bias should be promptly overcome.