公开(公告)号：US20140360250A1

公开(公告)日：2014-12-11

申请号：US14247102

申请日：2014-04-07

申请人： Mark A. JOHNSON ,  Andrew S. Parr ,  Robert D. Eckles

发明人： Mark A. JOHNSON ,  Andrew S. Parr ,  Robert D. Eckles

IPC分类号： G01N33/00

CPC分类号： G01N33/0009 ,  B33Y70/00 ,  B33Y80/00 ,  G01N21/05 ,  G01N21/3504 ,  G01N33/004 ,  G01N33/0098 ,  G01N2021/8466

摘要： System flow path, designs that minimize the impact of gas diffusion sources and sinks. By reducing the magnitude of parasitic sources and sinks, lower rates of photosynthesis and transpiration can be more accurately measured, e.g., without the need for extensive empirical compensation. According to one aspect, a gas exchange analysis system includes a sample chamber defining a measurement volume for analysis of a sample, the sample chamber having an inlet and an outlet, wherein the internal surface(s) of the chamber defining the measurement volume are metal plated. The system also typically includes a source of gas coupled with the inlet of the sample chamber, and a gas analyzer coupled with the outlet of the sample chamber and configured to measure a concentration of one or more gases exiting the chamber, whereby the metal plated internal surface(s) of the chamber reduces sorption of the one or more gases within the chamber. The low thermal conductivity of the chamber substrate material provides an energy efficient means of sample temperature control. The low density of the chamber substrate material reduces chamber weight for improved portability and ergonomics.”

摘要翻译： 系统流动路径，使气体扩散源和汇的影响最小化的设计。 通过减少寄生源和汇的幅度，可以更准确地测量较低的光合作用和蒸腾速率，例如，不需要广泛的经验补偿。 根据一个方面，一种气体交换分析系统包括：样品室，其限定用于样品分析的测量体积，所述样品室具有入口和出口，其中限定所述测量体积的所述室的内表面是金属 镀。 该系统还通常包括与样品室的入口耦合的气体源，以及与样品室的出口耦合的气体分析器，其被配置为测量离开室的一种或多种气体的浓度，由此内部金属镀 室的表面减少了室内的一种或多种气体的吸附。 室衬底材料的低热导率提供了一种能量效率的样品温度控制手段。 腔室基材材料的低密度降低了室重量，从而改善了便携性和人体工程学。

公开(公告)号：US08692202B2

公开(公告)日：2014-04-08

申请号：US13149709

申请日：2011-05-31

申请人： Mark A. Johnson ,  Andrew S. Parr ,  Robert D. Eckles

发明人： Mark A. Johnson ,  Andrew S. Parr ,  Robert D. Eckles

IPC分类号： G01J5/02

CPC分类号： G01N33/0009 ,  B33Y70/00 ,  B33Y80/00 ,  G01N21/05 ,  G01N21/3504 ,  G01N33/004 ,  G01N33/0098 ,  G01N2021/8466

摘要： System flow path designs that minimize the impact of gas diffusion sources and sinks. By reducing the magnitude of parasitic sources and sinks, lower rates of photosynthesis and transpiration can be more accurately measured, e.g., without the need for extensive empirical compensation. The gas exchange analysis system includes a sample chamber having an inlet and an outlet, wherein the internal surface(s) of the chamber defining the measurement volume are metal plated. The system also typically includes a source of gas coupled with the inlet of the sample chamber, and a gas analyzer coupled with the outlet of the sample chamber and configured to measure a concentration of one or more gases exiting the chamber, whereby the metal plated internal surface(s) of the chamber reduces sorption of the one or more gases within the chamber.

摘要翻译： 系统流路设计，尽量减少气体扩散源和水槽的影响。 通过减少寄生源和汇的幅度，可以更准确地测量较低的光合作用和蒸腾速率，例如，不需要广泛的经验补偿。 气体交换分析系统包括具有入口和出口的样品室，其中限定测量体积的室的内表面是金属镀覆的。 该系统还通常包括与样品室的入口耦合的气体源，以及与样品室的出口耦合的气体分析器，其被配置为测量离开室的一种或多种气体的浓度，由此内部金属镀 室的表面减少了室内的一种或多种气体的吸附。

公开(公告)号：US20120074325A1

公开(公告)日：2012-03-29

申请号：US13149709

申请日：2011-05-31

申请人： Mark A. Johnson ,  Andrew S. Parr ,  Robert D. Eckles

发明人： Mark A. Johnson ,  Andrew S. Parr ,  Robert D. Eckles

IPC分类号： G01N21/35

CPC分类号： G01N33/0009 ,  B33Y70/00 ,  B33Y80/00 ,  G01N21/05 ,  G01N21/3504 ,  G01N33/004 ,  G01N33/0098 ,  G01N2021/8466

摘要： System flow path designs that minimize the impact of gas diffusion sources and sinks. By reducing the magnitude of parasitic sources and sinks, lower rates of photosynthesis and transpiration can be more accurately measured, e.g., without the need for extensive empirical compensation. According to one aspect, a gas exchange analysis system includes a sample chamber defining a measurement volume for analysis of a sample, the sample chamber having an inlet and an outlet, wherein the internal surface(s) of the chamber defining the measurement volume are metal plated. The system also typically includes a source of gas coupled with the inlet of the sample chamber, and a gas analyzer coupled with the outlet of the sample chamber and configured to measure a concentration of one or more gases exiting the chamber, whereby the metal plated internal surface(s) of the chamber reduces sorption of the one or more gases within the chamber. The low thermal conductivity of the chamber substrate material provides an energy efficient means of sample temperature control. The low density of the chamber substrate material reduces chamber weight for improved portability and ergonomics.”

摘要翻译： 系统流路设计，尽量减少气体扩散源和水槽的影响。 通过减少寄生源和汇的幅度，可以更准确地测量较低的光合作用和蒸腾速率，例如，不需要广泛的经验补偿。 根据一个方面，一种气体交换分析系统包括：样品室，其限定用于样品分析的测量体积，所述样品室具有入口和出口，其中限定所述测量体积的所述室的内表面是金属 镀。 该系统还通常包括与样品室的入口耦合的气体源，以及与样品室的出口耦合的气体分析器，其被配置为测量离开室的一种或多种气体的浓度，由此内部金属镀 室的表面减少了室内的一种或多种气体的吸附。 室衬底材料的低热导率提供了一种能量效率的样品温度控制手段。 腔室基材材料的低密度降低了室重量，从而改善了便携性和人体工程学。