专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06860136B1 Method and apparatus for measuring physical properties of matter 失效
标题翻译：测量物质物理性质的方法和装置
公开(公告)号：US06860136B1
公开(公告)日：2005-03-01
申请号：US10364770
申请日：2003-02-11
申请人： John C. Hay, Jr. , Barry N. Lucas
发明人： John C. Hay, Jr. , Barry N. Lucas
IPC分类号： G01G5/00 , G01G19/00 , G01N3/00 , G01N3/02 , G01N9/08 , G01N9/20
CPC分类号： G01N9/08 , G01G5/00 , G01G19/00 , G01N9/20 , G01N2203/0044 , G01N2203/0085 , G01N2203/0256
摘要： The invention determines density of a sample while the sample is immersed in a gaseous medium having variable density. The apparatus includes a chamber for containing the gaseous medium and the sample, means for selectively varying the density of the gaseous medium over a range of densities, and means for producing electrical signals related to the density of the gaseous medium. In the chamber is a balance beam having a sample pan at a first end and a coil assembly at an opposing second end. Also at the second end of the beam is a first counter-weight having a volume and mass which is substantially equivalent to the volume and mass of sample pan, and which creates a moment that is substantially equivalent to the moment created by the sample pan. At the first end of the beam is a second counter-weight having a volume and mass which is substantially equivalent to the volume and mass of the coil assembly, and which creates a moment which is substantially equivalent to the moment created by the coil assembly. A magnet assembly is disposed adjacent to and magnetically interacts with the coil assembly. A controller provides a coil current to the coil assembly, thereby generating a magnetic field which interacts with the magnet assembly. According to the invention, the interaction between the magnetic field of the coil assembly and the magnet assembly applies a force to the second end of the beam to keep the beam balanced as the density of the gaseous medium in the chamber is varied over the range of densities. A computing device receives the electrical signals related to the density of the gaseous medium and the electrical signal related to the coil current, and calculates the density of the sample based thereon.
摘要翻译：本发明在将样品浸入具有可变密度的气体介质中时确定样品的密度。该装置包括用于容纳气态介质和样品的室，用于在一定范围内选择性地改变气体介质的密度的装置，以及用于产生与气体介质的密度有关的电信号的装置。在室中是平衡梁，其具有在第一端处的样品盘和在相对的第二端处的线圈组件。在梁的第二端处也是具有体积和质量的第一配重，其基本上等于样品盘的体积和质量，并且产生基本上等于由样品盘产生的时刻的力矩。在梁的第一端是具有体积和质量的第二配重，其基本上等于线圈组件的体积和质量，并且产生与由线圈组件产生的力矩基本相等的力矩。磁体组件设置成与线圈组件相邻并且与线圈组件磁力相互作用。控制器向线圈组件提供线圈电流，从而产生与磁体组件相互作用的磁场。根据本发明，线圈组件和磁体组件的磁场之间的相互作用向梁的第二端施加力，以保持梁的平衡，因为腔室中的气体介质的密度在密度计算装置接收与气体介质的密度相关的电信号和与线圈电流相关的电信号，并基于此计算样品的密度。

IPRDB

热门服务

关于我们

友情链接

联系方式