REDUCING THE UNCERTAINTY OF A GRAVIMETRIC PRIMARY STANDARD |
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| Thomas Kegel, William Johansen |
- Abstract:
- CEESI operates a gravimetric primary standard for high pressure compressible flow measurement. A program is underway to reduce the uncertainty. A knife edged balance requires human position observation; an optical sensor will provide an electronic indication. A set of ball valves transfer the flow source from a start-up supply to the gravimetric pressure vessel. The upgrade will include monitoring pressure and temperature transients while the valves reposition. A series of "trapped volumes" contain fluid that is not included in the direct mass determination, but flows through the test section. Improved volume, pressure and temperature measurements are being implemented.
- Keywords:
- primary standard, gravimetric, high-pressure, optical sensor
- Download:
- IMEKO-TC9-2013-023.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC9
- Event name:
- FLOMEKO 2013
- Title:
16th International Flow Measurement Conference
- Place:
- Paris, FRANCE
- Time:
- 24 September 2013 - 26 September 2013