| 摘要 |
PURPOSE:To obtain a fluid density detector which can control the fluid density with good accuracy and has high reliability and to obtain a pressure abnormality detector which can detect with good accuracy for the drastic abnormal rise of the fluid pressure. CONSTITUTION:The fluid pressure in a container 1 in which the fluid is sealed by the pressure higher than a large air pressure is detected. Into a closed container 39, the same fluid as the fluid sealed in the container 1 is sealed by the same pressure as the fluid pressure in the container 1, and the closed container 39 is provided in the container 1. A pressure difference detecting means 40 to detect the difference pressure of the fluid pressure in the container 1 and the fluid pressure in the closed container 39 is fitted at the closed container 39. The information based on the difference pressure from the pressure difference detecting means 40 is compared with the stipulated value by a detecting means, and at the time of the stipulated value or above, is outputted. |
