| 摘要 |
PROBLEM TO BE SOLVED: To provide an air bubble ratio measuring instrument capable of accurately measuring the air bubble ratio in the liquid flowing through a flow channel, and air bubble ratio measuring method. SOLUTION: The air bubble ratio measuring instrument is constituted so as to measure the air bubble ratio in the oil flowing through an oil passage and equipped with the cylinder 211A of an injector 211 for receiving the oil flowing in from an oil passage, a three-way valve 213 capable of connecting and cutting off the oil passage and the cylinder 211A, a thermocouple 214 for detecting the temperature of the oil in the cylinder 211A, a kill switch 216 for detecting the volume of the oil flowing in the cylinder 211A and a controller 217 for controlling the switching of the three-way valve 213. The controller 217 is constituted so that the oil passage and the cylinder 211A are cut off on the basis of that the inflow of a predetermined amount of oil in the cylinder 211A is detected by the kill switch 216 after the oil passage and the cylinder 211A are connected. COPYRIGHT: (C)2007,JPO&INPIT
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