发明名称 |
Method for determining vanishing temperature of petroleum product crystals and device therefor |
摘要 |
The invention concerns a method for determining the vanishing temperature of petroleum product crystals, characterized in that it comprises the following steps: introducing the sample to be analyzed in a measuring cell ( 4 ), arranged in a cryostatic chamber ( 1 ); connecting a laser emitter ( 6 ) and an associated optical receiver ( 7 ) to pass an optical beam through the sample to be analyzed and recording the light intensity received by the receiver ( 7 ); gradually lowering the temperature of the cryostatic chamber ( 1 ) then increasing it again gradually while recording the curve representing the variations in the light intensity received by the receiver ( 7 ) based on the temperature; and determining the vanishing temperature of the crystals from said curve.
|
申请公布号 |
US7338203(B2) |
申请公布日期 |
2008.03.04 |
申请号 |
US20050531502 |
申请日期 |
2005.10.05 |
申请人 |
I.S.L. |
发明人 |
CLERIS HERVE;LARA OLIVIER |
分类号 |
G01N25/02;G01N25/04;G01N33/28 |
主分类号 |
G01N25/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|