COMPARISON BETWEEN GAS AND HYDRAULIC PRESSURE BALANCES USING A LIQUID-LUBRICATED PRESSURE BALANCE
Tokihiko Kobata
Abstract:
A method for comparing pressures of different mediums generated by gas and hydraulic pressure balances is examined to improve consistency between gas and hydraulic pressure-standards. The pressure range compared is 0.5 MPa to 7 MPa. In the method, a liquid-lubricated pressure balance was used and a precise pressure transducer was applied as a comparator to determine the equilibrium state between the two pressure balances. In this paper, the comparative result and the uncertainty obtained from the method are presented. From the results, it was shown that the method adopted in this study could be used to compare gas and hydraulic pressure balances accurately.
Keywords:
pressure standard, pressure balance, pressure transducer
Download:
IMEKO-WC-2009-TC16-589.pdf
DOI:
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Event details
Event name:
XIX IMEKO World Congress
Title:

Fundamental and Applied Metrology

Place:
Lisbon, PORTUGAL
Time:
06 September 2009 - 11 September 2009
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