Abstract
A magnetic levitation densimeter for accurate PVT-property measurement has been investigated. For the existing densimeter, the most serious factor of the measurement uncertainty is a density measurement error caused by magnetism of materials around the magnetic coupling. A new densimeter is now under development to overcome the error. The new densimeter has two features; one is to keep the permanent magnet at the same vertical position in the every measurement, and the other is to use two sinkers with different densities. The error can be almost perfectly corrected by employing the above methods.
