| Autor: |
Joel T Park, Kyung-Ho Chang |
| Rok vydání: |
2001 |
| Předmět: |
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| Zdroj: |
Measurement. 30:95-103 |
| ISSN: |
0263-2241 |
| Popis: |
Density measurements by a glass pycnometer for a light weight oil are presented as a function of temperature. Details of the measurement technique are described. An uncertainty analysis of the data was performed per the ISO Uncertainty Guide. Oil density at 20°C was 815.077±0.065 kg/m 3 (±80 ppm) with a linear curve fit and 815.087±0.027 kg/m 3 (±33 ppm) with a cubic curve at the 95% confidence level. The largest component in oil density uncertainty was from volume calibration of the pycnometer. Most of the uncertainty in the volume was from a linear curve fit of the volume versus temperature data. The oil density measurement was repeated in a second experiment, where a data point in the first was confirmed as an outlier. Analysis indicates that pycnometer measurements are of sufficient accuracy for an uncertainty of ±120 to ±190 ppm uncertainty in density for a flowmeter calibration facility. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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