| 摘要 |
PURPOSE:To make possible the calculation of the solidifying point of a sample liquid with high accuracy by measuring continuously the temp. change of the sample liquid while agitating the same and detecting the point of the time when the temp. change of the sample liquid attains equil. or increases as the latent heat of the solidification of the sample liquid. CONSTITUTION:A vessel 2 into whih the sample liquid 1 is injected is charged into a cooling bath 5 contg. a refrigerant 4 via an outside cylinder 3. While agitating the test liquid 1 by an agitating means 8 consisting of an agitating bar 6 and an agitating bar driver 7, the temp. of the sample liquid 1 is periodically measured by a temp. measuring means consisting of a temp. sensor 9 and a temp. measuring circuit 10. The point of the time when the temp. of the liquid 1 increases or attains the equil. state is detected as the latent heat of solidification by an arithmetic control means 12 and the operation of the means 8 is stopped. The solidification point is calculated by the means 12 and is displayed by a display means 13. The human intervention is eliminated in reading of the temp. in the above-mentioned manner and therefore the solidifying point is determined with high accuracy. |
