| 摘要 |
PURPOSE: To improve the working efficiency and to achieve an accurate measurement by obtaining the volume inflation rate of a fluid to be inspected due to dissolved gas based on the physical quantity (density) of the fluid to be inspected before and after degassing, and calculating the amount of gas based on the proportional relationship between the volume expansion coefficient and the dissolved gas. CONSTITUTION: An assumed value setting means 51 sets the amount of dissolved gas in a fluid to be inspected before degassing to an assumed amount of gas GV0 , inputs it to a virtual density calculation means 52 along with a density p2 of the fluid to be inspected after degassing measured by a vibration type density meter 2, and calculates a virtual density p3 when assuming that there is no volume expansion due to the dissolved gas. By inputting the density p3 to an expansion coeff. calculation means 53 along with the density p2 , a volume expansion coeff. k is obtained from the ratio of both. A means 54 for calculating the amount of gas obtains a calculated amount of gas GVc based on the proportional relationship between the expansion coeff. k and the dissolved gas. Then, a comparison means 55 outputs the calculated amount of gas GVc to a display means as a true dissolved gas when a differenceδbetween the calculated amount of gas GVc and the assumed amount of gas GVO is equal to or less than a specific value.
|
