| 摘要 |
PURPOSE:To enable measurement from a minute flow amount to a large flow amount, by determining the inside contour line of a metering chamber member by the outside contour line of a rotor having a three lobe shaped inner tooth configuration moved while meshed with the two lobe shaped outer tooth configuration of a shaft member while detecting the rotation of the rotor. CONSTITUTION:A rotor 5 is meshed with a shaft member 4 and divides a metering chamber formed of a metering chamber member 1 and end surface members 2, 3 into three chambers as well as receives the pressure of a liquid, which flows between ports 2a, a' and ports 2b, b' while forming a fluid seal between the chambers, and rotated at angular velocity proportional to the volume and flow amount of a fluid. In this case, the rotation of the rotor 5 is detected by pick-up responding to a large number of permanent magnets embedded in the rotor 5 and displayed as a flow amount by a count apparatus. By this mechanism, because the rotor 5 can be constituted in an extremely light wt., measurement to a minute flow amount can be performed. |
