Aeration amount measuring method and aeration rate measuring device

摘要

PPROBLEM TO BE SOLVED: To provide a mixed air amount measuring device capable of highly-precisely inspecting aeration in a liquid within a short time. PSOLUTION: The mixed air amount measuring device 1 includes a vacuum pump 10 for injecting a brake fluid into a piping system 106 of a braking system 100, an injection pump 20, a brake fluid tank 25, a volume changing mechanism 30 for changing a volume of the brake fluid filled in the piping system 106, a pressure sensor 40 for detecting changes in a fluid pressure with changes in the volume of the brake fluid, and a computer 50 for calculating an amount of mixed air in the brake fluid based on detection results of displacement sensors 34 and the pressure sensor 40 of the mechanism 30. PCOPYRIGHT: (C)2007,JPO&INPIT