Photoacoustic Detector with Acoustic and Vibration Noise Compensation
    4.
    发明申请
    Photoacoustic Detector with Acoustic and Vibration Noise Compensation 有权
    具声学和振动噪声补偿的光声探测器

    公开(公告)号:US20120247183A1

    公开(公告)日:2012-10-04

    申请号:US13078032

    申请日:2011-04-01

    申请人: Tom M. Rezachek

    发明人: Tom M. Rezachek

    IPC分类号: G01N21/17

    CPC分类号: G01N21/1702

    摘要: A photoacoustic detector includes a sensing region for receiving atmospheric samples. One microphone receives acoustic samples from the sensing region. Another microphone receives acoustic samples from a displaced region. Microphone outputs can be subtracted to eliminate common noise and to generate an indicium of gas present in the sensing region.

    摘要翻译: 光声检测器包括用于接收大气样品的感测区域。 一个麦克风从感测区域接收声学样本。 另一麦克风从移位区域接收声学样本。 可以减去麦克风输出以消除常见噪声并产生感测区域中存在的气体的标记。

    Gas analyzer cassette system
    5.
    发明授权
    Gas analyzer cassette system 有权
    气体分析仪盒系统

    公开(公告)号:US08128873B2

    公开(公告)日:2012-03-06

    申请号:US11923325

    申请日:2007-10-24

    IPC分类号: G01N7/00

    CPC分类号: G01N21/8483

    摘要: A highly sensitive fluid composition analyzer where a fluid may be placed in contact with a very small area on a material sensitized to change color in the presence of a specific type of compound, to be impinged with light. The light reflected, transmitted and/or scattered by the material may serve as input for the analyzer electronics. The fluid may be pre-concentrated prior to being brought in contact with the material. The area on the material may be a spot having an outside dimension of less than one millimeter.

    摘要翻译: 一种高灵敏度的流体组成分析器,其中流体可以放置在与特定类型的化合物存在下变色的材料上的非常小的区域接触以被光照射的物质上。 由材料反射,透射和/或散射的光可以用作分析仪电子器件的输入。 流体可以在与材料接触之前被预浓缩。 材料上的区域可以是外部尺寸小于1毫米的斑点。

    GAS ANALYZER CASSETTE SYSTEM
    6.
    发明申请
    GAS ANALYZER CASSETTE SYSTEM 有权
    气体分析仪CASSETTE系统

    公开(公告)号:US20090111191A1

    公开(公告)日:2009-04-30

    申请号:US11923325

    申请日:2007-10-24

    CPC分类号: G01N21/8483

    摘要: A highly sensitive fluid composition analyzer where a fluid may be placed in contact with a very small area on a material sensitized to change color in the presence of a specific type of compound, to be impinged with light. The light reflected, transmitted and/or scattered by the material may serve as input for the analyzer electronics. The fluid may be pre-concentrated prior to being brought in contact with the material. The area on the material may be a spot having an outside dimension of less than one millimeter.

    摘要翻译: 一种高灵敏度的流体组成分析器,其中流体可以放置在与特定类型的化合物存在下变色的材料上的非常小的区域接触以被光照射的物质上。 由材料反射,透射和/或散射的光可以用作分析仪电子器件的输入。 流体可以在与材料接触之前被预浓缩。 材料上的区域可以是外部尺寸小于1毫米的斑点。

    Photoacoustic detector with acoustic and vibration noise compensation
    7.
    发明授权
    Photoacoustic detector with acoustic and vibration noise compensation 有权
    光声检测器,具有声学和振动噪声补偿

    公开(公告)号:US08746038B2

    公开(公告)日:2014-06-10

    申请号:US13078032

    申请日:2011-04-01

    申请人: Tom M. Rezachek

    发明人: Tom M. Rezachek

    IPC分类号: G01N21/17

    CPC分类号: G01N21/1702

    摘要: A photoacoustic detector includes a sensing region for receiving atmospheric samples. One microphone receives acoustic samples from the sensing region. Another microphone receives acoustic samples from a displaced region. Microphone outputs can be subtracted to eliminate common noise and to generate an indicium of gas present in the sensing region.

    摘要翻译: 光声检测器包括用于接收大气样品的感测区域。 一个麦克风从感测区域接收声学样本。 另一麦克风从移位区域接收声学样本。 可以减去麦克风输出以消除常见噪声并产生感测区域中存在的气体的标记。

    Quasi-static viscometer
    9.
    发明授权
    Quasi-static viscometer 失效
    准静态粘度计

    公开(公告)号:US06178811B2

    公开(公告)日:2001-01-30

    申请号:US09266681

    申请日:1999-03-11

    IPC分类号: G01N1108

    CPC分类号: G01N11/16 G01N33/225

    摘要: A viscometer having a fluid volume-displacer or driver, such as a speaker membrane, and a pressure sensor or detector, such as a microphone membrane, forming the inside surfaces of a cavity that is sealed from the ambient environment of the viscometer except for a controlled leak such as a capillary tube. An electrical signal from the sensor or detector is processed to indicate viscosity of the fluid in the cavity. Additionally determined from the viscosity are heating value, oxygen demand and other thermophysical properties of the fluid. Also, absolute pressure is derived after viscosity is determined.

    摘要翻译: 具有液体体积置换器或驱动器(例如扬声器膜)和压力传感器或检测器(例如麦克风膜)的粘度计形成空腔的内表面,所述内表面与粘度计的周围环境密封,除了 受控泄漏如毛细管。 来自传感器或检测器的电信号被处理以指示腔中的流体的粘度。 另外由粘度确定是流体的热值,氧气需求和其他热物理性质。 此外,在确定粘度之后导出绝对压力。