Calibration of densimeters for liquefied light hydrocarbons

Journal Article · Mon Dec 20 04:00:00 EST 1982 · Oil Gas J.; (United States)

OSTI ID:5894953

Siegwarth, J D; LaBrecgue, J F

Though the commercial densimeters tested all functioned in LNG, that is, all showed unambiguous variations in the parameter affected by density variations, they all required calibrations in liquids of known density and were found to have inadequate calibrations. Their calibration error was about ten times larger than their precision. The calibration error arose because the densimeter was sensitive to parameters not included in the calibration equation and also because the densimeters were never calibrated in LNG or methane for reasons of safety. Tests of calibration stability with time and use, performed on some of the commercial densimeters, indicated they had short term stability. The measurements of longer term stability were not done for some and inconclusive for those for which some tests were done.

• Research Organization: National Bureau of Standards, Boulder, CO
• OSTI ID: 5894953
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 80:51; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
033000 -- Natural Gas-- Properties & Composition
090110* -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
ALKANES
CALIBRATION
DATA COVARIANCES
DENSIMETERS
ENERGY SOURCES
EQUATIONS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
LIQUEFIED GASES
LIQUEFIED NATURAL GAS
LIQUIDS
MEASURING INSTRUMENTS
METHANE
NATURAL GAS
ORGANIC COMPOUNDS
PARAMETRIC ANALYSIS
SAFETY
STABILITY
TESTING