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1. 发明专利

JPS63111423A WATER LEVEL READER 失效
公开(公告)号：JPS63111423A
公开(公告)日：1988-05-16
申请号：JP25776486
申请日：1986-10-28
申请人： MASUDA KK , NITTO ELECTRIC IND CO
发明人： YANAGAWA YASUHIRO , YAKOYA KENZOU
IPC分类号： G01F23/00 , G01F23/28
摘要： PURPOSE:To read variation in the water level in a bullet by an easy operation with high accuracy by detecting the liquid level in the bullet which varies in the internal liquid level by a liquid level sensor, and moving up-and-down the bullet so that the liquid level after the variation stays at the same level. CONSTITUTION:A cylinder 5 as a body to be detected is stored in a sealed water jacket filled with water and, water is fed into this cylinder 5 to apply pressure, and the quantity of deformation of the cylinder is measured from the amount of water discharged from the water jacket 4 owing to the expansion of the cylinder. This inspection device 2 finds the quantity of deformation of the cylinder 5 after the pressure application from variation in the liquid level in the bullet 26 communicating with the water jacket 4. When the liquid level in a beam 26 rises, a driving means moves up-and-down the bullet to make a new liquid level coincident with a 0 point when the liquid level of the bullet 26 adjusted previously to the 0 point so as to eliminate the influence of gravitational force operating on the water column. At this time, liquid level sensor detects the liquid level after the variation.

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