公开(公告)号：EP1867963A2

公开(公告)日：2007-12-19

申请号：EP07006170.0

申请日：2007-03-26

申请人： Mocon, Inc.

发明人： Ascheman, Timothy A.

IPC分类号： G01F1/76 ,  G01F15/00 ,  G01F17/00 ,  B65B25/00 ,  B65D81/20

CPC分类号： G01F17/00 ,  G01F1/76 ,  G01F15/005

摘要： An instrument for accurately measuring mass flow rate of a fluid pumped from a hermetically sealed container, through attainment of a steady state mass flow rate, comprising:
a connection device defining a lumen, the connection device configured and arranged to sealingly engaging the sealed container so as to place the lumen in fluid communication with a retention chamber defined by such a container,
a vacuum pump in sealed fluid communication with the lumen effective for evacuating gaseous content from the sealed container through the lumen,
a mass flow rate sensor in sealed fluid communication with the lumen for sensing mass flow rates pulled through the lumen, and
a check valve, in sealed fluid communication with the lumen and positioned intermediate the vacuum pump and the mass flow rate sensor for inhibiting the sensing of negative flow spikes by the mass flow rate sensor.

摘要翻译： 率仪精确地设定测量从密封容器中泵出，通过稳态质量流的程度的流体的质量流率，包括：连接装置，限定内腔，连接装置构造并布置成密封地接合所述密封的容器，以便 以流体连通的内腔放置与通过搜索一个容器，真空泵与内腔密封地流体连通有效穿过内腔，在密封流体连通的质量流量传感器抽空从密封容器的气态内容所限定的保持腔 与所述内腔，用于感测质量流量通过内腔拉动，以及止回阀，速率与内腔密封地流体连通并位于中间的真空泵和用于抑制由所述质量流量负流量尖峰的感测的质量流量传感器 传感器。

公开(公告)号：EP1847815A2

公开(公告)日：2007-10-24

申请号：EP07005852.4

申请日：2007-03-21

申请人： Mocon, Inc.

发明人： Mayer, Daniel W. ,  Ascheman, Timothy A.

IPC分类号： G01F22/02

CPC分类号： G01M3/3272 ,  G01F17/00 ,  G01F22/02

摘要： An instrument and method for measuring the volume of a hermetically sealed, variable volume, pressure conforming container. The instrument includes a needle, a vacuum pump, a mass flow rate sensor and an integrator. The needle has a lumen operable for sealingly perforating a container and thereby placing the lumen of the needle in fluid communication with a retention chamber defined by the container. The vacuum pump evacuates the gaseous content from the retention chamber through the lumen defined by the needle and past a mass flow rate sensor for sensing mass flow rates pulled through the lumen and transmitting corresponding mass flow rate signals over time to the integrator. The integrator is programmed to integrate the received mass flow rate signals over time through achievement of an evacuated retention chamber to generate a total mass value, and calculate a volume from the total mass value employing the Ideal Gas Law.

摘要翻译： 仪和用于测量气密密封的，可变体积，压力符合容器的容积的方法。 该器械包括一针，真空泵，质量流量传感器和积分器。 所述针具有可操作用于密封穿孔的容器，并且由此将所述针的内腔流体连通由容器限定的保持腔室的内腔。 真空泵抽空从保持室通过针和过去质量流量传感器，用于感测质量流量限定的内腔的气态内容通过内腔拉动并发射随时间积分对应的质量流率信号。 积分器被编程为接收到的质量流率信号随着时间的推移，通过抽成真空的保持腔室的成就整合，以产生一总质量值，并且计算从总质量值用人理想气体定律的体积。