THE CHARACTERIZATION OF FPG (FORCE-BALANCED PISTON GAUGE) IN ABSOLUTE MODE IN TUBITAK UME PRESSURE LABORATORY

Yasin Durgut, Gökçe Sevim Sarıyerli
Abstract:
TUBITAK UME has been using FPG system which was developed by DH Instruments Inc. since 2013. FPG system covers the range of gauge and absolute pressure from less than 1 Pa to 15 kPa. The system uses a mass comparator to measure the force resulting from differential pressure across a non-rotating piston in a close fitting cylinder. Resolution is up to 1 mPa and measurement uncertainty as low as ± (5 mPa + 3 · 10-5 · p) is estimated. The most important advantage of FPG is the fact that a conventional pressure balance can be used to determine the effective area. However, the measurement is not straight forward due to the lubrication gas flow in the FPG. The validation and metrological characterization of the new instrument is a challenge for UME and it’s more convenient to join international comparison to provide the traceability of measurement results.
This paper describes the metrological characterization of FPG in gauge and in absolute modes.
Keywords:
FPG,comparator, pressure balance, CDG
Download:
IMEKO-WC-2015-TC16-331.pdf
DOI:
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Event details
Event name:
XXI IMEKO World Congress
Title:

Measurement in Research and Industry

Place:
Prague, CZECH REPUBLIC
Time:
30 August 2015 - 04 September 2015
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