Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 10 Issue 1
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- Pages.28-33
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- 1993
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
Sound velocity effect on vibrating gas densimeter
음속이 진동형 기체 밀도 측정기에 미치는 영향
Abstract
Measurements errors due to sound velocity effect on vibrating gas densimeters were described. Nitrogen was used to calibrate the densimeter, and oxygen was employed to determine a coefficient for the compensation of sound velocity effect. Sound velocity effects were shown with methane at temperatures of 7.97, 19.93 and 39.57 .deg. C, and pressures up to 3.6 Mpa. A relative error of about 1% was introduced when the nitrogen calibrated densimeter was used to measure densities of pure methane. A method of sound velocity effect compensation was able to reduce the error down to 0.1%.