Calibration of densimeters for liquefied light hydrocarbons

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

OSTI ID:6523084

Siegworth, J D; LaBrecque, J F

Recognizing the need for an improved method of testing and calibrating LNG densimeters, the US gas industry established the LNG density reference system project to test the performance of commercial densimeters in LNG and to develop a calibration method. The density reference system (DRS) designed for the project uses a standard densimeter with a silicon single crystal immersed in the test liquid that is weighed by an electronic balance. The unique setup of the DRS allows analysts to safely use an LNG-like mixture as the test sample. Tests in the DRS confirmed the inaccuracy of commercial densimeters for LNG measurement; the errors arose because, for safety reasons, the instruments had never been calibrated with LNG. The DRS offers a means of accurately calibrating densimeters, especially those in refrigerated-gas service.

• Research Organization: National Bureau of Standards, Boulder, CO
• OSTI ID: 6523084
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 80; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
033000* -- Natural Gas-- Properties & Composition
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ACCURACY
CALIBRATION
DENSIMETERS
DENSITY
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
LIQUEFIED GASES
LIQUEFIED NATURAL GAS
MEASURING INSTRUMENTS
NATURAL GAS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
TESTING