Calibrating a nondispersive infrared gas analyzer
    1.
    发明授权
    Calibrating a nondispersive infrared gas analyzer 失效
    校准一个不间断的红外气体分析仪

    公开(公告)号:US5077469A

    公开(公告)日:1991-12-31

    申请号:US591295

    申请日:1990-10-01

    摘要: Compensation and calibration method for a nondispersive infrared gas analyzer which includes an infrared source of radiation, a measuring path, a reference path, modulation devices, a detector for differential pressure measuring, comprises the following steps: first and prior to measurement, the reference gas having a variable basic concentration in the measuring component is forced through the reference branch and through the measuring branch and the detector is set to a zero position; next a dual calibration chamber is placed into the two reference paths while both of them are still passed through by the reference gas, one of the calibration chambers including a particular concentration in the measuring gas the other one lacking that measuring gas; now the sensitivity and amplification of the detector that obtains as a result of changes in the radiation on account of placing the calibration chamber into the reference and measuring path is adjusted, whereupon the calibration chamber is removed, reference gas still is passed through the reference chamber, while measuring gas now flows through the measuring chamber.

    摘要翻译: 包括红外辐射源,测量路径,参考路径,调制装置,差压测量用检测器的非分散型红外线气体分析仪的补偿和校准方法包括以下步骤:在测量之前和之前,参考气体 在测量部件中具有可变的基本浓度被迫通过参考分支并通过测量分支,并且检测器被设置为零位置; 接下来,将双重校准室放置在两个参考路径中,同时它们仍然被参考气体通过,其中一个校准室在测量气体中包括特定的浓度,另一个校准室中缺少该测量气体; 现在调整由于将校准室置于参考和测量路径而由辐射变化而获得的检测器的灵敏度和放大率,从而校准室被移除,参考气体仍然通过参考室 而测量气体现在流经测量室。

    Controllable interferometer
    3.
    发明授权
    Controllable interferometer 失效
    可控干涉仪

    公开(公告)号:US4999013A

    公开(公告)日:1991-03-12

    申请号:US338723

    申请日:1989-04-14

    IPC分类号: G01J3/26 G01N21/31

    摘要: Interferometric equipment for detecting a substance having a structure preferably a periodic or quasiperiodic absorption spectrum; the equipment includes a source of radiation, a path for that radiation that includes a sample cell with the substance to be detected, an interference filter and a detector, and is improved in that the interference filter is constructed as an electrically tunable filter, including a plate or cell element with semitransparent reflective boundaries serving as electrodes; an electrical voltage is applied to said electrodes such that the transmission characteristics of the filter is varied and the amplitude of the voltage as applied to these electrodes is an indication of that variation; and the thickness of the plate or cell is selected to meet one of the following criteria (i) a distance between the interference lines produced equals a distance of absorption lines within a periodic absorption spectrum of said substance; (ii) the equipment causes a line to be separated from the radiation having a bandwidth which is small as compared with a spacing between two absorption lines of the substance to be found (iii) the equipment causes a line to be separated from the radiation, to overlap an edge of an absorption band of the substance to be directed.

    摘要翻译: 用于检测具有优选周期性或准周期性吸收光谱的结构的物质的干涉仪; 该设备包括辐射源,该辐射路径包括具有待检测物质的样品池,干涉滤光器和检测器,并且改进了干涉滤光器被构造为电可调滤光器,包括 具有用作电极的半透明反射边界的板或单元元件; 电压被施加到所述电极,使得滤波器的传输特性改变,并且施加到这些电极的电压的幅度是该变化的指示; 选择板或单元的厚度以满足以下标准之一(i)产生的干涉线之间的距离等于所述物质的周期性吸收光谱内的吸收线的距离; (ii)设备使得线路与具有与要发现的物质的两条吸收线之间的间隔相比较小的带宽的辐射分离(iii)设备使线路与辐射分离, 以与待导向的物质的吸收带的边缘重叠。

    Infrared gas analyzer
    4.
    发明授权
    Infrared gas analyzer 失效
    红外气体分析仪

    公开(公告)号:US4682031A

    公开(公告)日:1987-07-21

    申请号:US856585

    申请日:1986-04-25

    IPC分类号: G01N21/61 G01N21/37

    CPC分类号: G01N21/37

    摘要: A infrared gas analyzer having measuring and reference chambers and receiving chambers respectively disposed on radiation exit sides of the measuring and reference chambers and being filled with a particular gas; a pressure communicating duct system including a particular chamber interconnects the two receiving chambers is partitioned by a foil of polyvinylidenfluoride being piezo electrically effective to generate an electrical signal on account of a pressure differential between the two receiving chambers, as indication of the concentration of the measuring gas, i.e., host gas that flows through the measuring chamber.

    摘要翻译: 一种红外线气体分析仪,其具有分别设置在测量和参考室的辐射出口侧并且被特定气体填充的测量和参考室和接收室; 包括连接两个接收室的特定室的压力连通管道系统由聚电解质氟化物的箔分隔开,其压电有效,由于两个接收室之间的压力差产生电信号,作为测量浓度的指示 气体,即流过测量室的主体气体。

    Nondispersion, two beam, infrared gas analyzer
    5.
    发明授权
    Nondispersion, two beam, infrared gas analyzer 失效
    不分散,双光束,红外线气体分析仪

    公开(公告)号:US3970387A

    公开(公告)日:1976-07-20

    申请号:US547273

    申请日:1975-02-05

    IPC分类号: G01N21/61 G01N21/37 G01N21/36

    CPC分类号: G01N21/37

    摘要: The two beam analyzer has chambers traversed by infrared beams and passed through by test gas; the intensity of each beam is detected by a detector having chambers which are filled with gas of the same type as the gas to be detected (as a trace) in the test gas. Additionally, one beam path includes a selectivity cuvette or cell, filled exclusively with that type of gas, but at a rather low pressure.

    摘要翻译: 两束光束分析仪具有红外光束穿过的腔室,通过测试气体通过; 每个光束的强度由检测器检测,该检测器具有填充有与要检测的气体(作为痕迹)相同类型的气体的测试气体。 此外,一个光束路径包括选择性比色皿或电池,仅由该类型的气体填充,但是处于相当低的压力。

    Gas analyzer and a method for operating the same
    6.
    发明授权
    Gas analyzer and a method for operating the same 失效
    气体分析仪及其操作方法

    公开(公告)号:US06484562B2

    公开(公告)日:2002-11-26

    申请号:US10085319

    申请日:2002-02-27

    IPC分类号: F23J1500

    CPC分类号: G01N21/09

    摘要: A gas analyzer having an analysis or sensor unit and having an electronic processing unit, and a method for operating such a gas analyzer. In order to achieve substantially improved safety both in handling corrosive and/or combustible and/or toxic gases in a not potentially explosive atmosphere (ex-free atmosphere), and in the operation of such an analyzer in an exatmosphere, the analysis or sensor unit as such is of non-explosive configuration and is arranged in a gas tight chamber through which a toxic and/or corrosive and/or combustible gas flows and around which a second chamber is arranged.

    摘要翻译: 具有分析或传感器单元并具有电子处理单元的气体分析器和用于操作这种气体分析器的方法。 为了在不具有潜在爆炸性的气氛(无气氛)中处理腐蚀性和/或可燃性和/或有毒气体以及在这种分析仪在大气中的操作中实现显着提高的安全性,分析或传感器单元 因此是非爆炸性的构造,并且布置在气密室中,有毒和/或腐蚀性和/或可燃气体通过该气体室流动,第二腔室周围布置有气体。

    Calibration of nondispersive infrared photometer
    7.
    发明授权
    Calibration of nondispersive infrared photometer 失效
    非分光红外光度计校准

    公开(公告)号:US5003175A

    公开(公告)日:1991-03-26

    申请号:US359510

    申请日:1989-06-01

    IPC分类号: G01N21/61 G01N21/37

    摘要: The photometer is calibrated by using a permanently built-in installation of four, similarly configured chambers in a good heat conducting carrier which is slidably interposed between sample and reference chambers on one hand and the detection structure on the other hand. One pair of these chambers is placed in the paths during measurement and is filled with inert gas, the other pair has one chamber filled with calibration gas, the other one with inert gas. All chambers are closed with similar windows.

    摘要翻译: 通过使用永久内置的四个相同配置的室,在一个良好的导热载体中,一方面可滑动地插入在样品室和参考室之间以及另一方面检测结构来校准光度计。 一对这些室在测量期间放置在路径中,并且填充有惰性气体,另一对具有填充有校准气体的一个室,另一个室具有惰性气体。 所有的房间都有类似的窗户关闭。

    Photometer
    8.
    发明授权
    Photometer 失效
    光度计

    公开(公告)号:US4700073A

    公开(公告)日:1987-10-13

    申请号:US836102

    申请日:1986-03-04

    申请人: Walter Fabinski

    发明人: Walter Fabinski

    摘要: An infrared photometer having a measuring cuvette with entrance and exit windows and an output detector preferably made of polyvinylidenfluoride; a second infrared detector definitely made of polyvinylidenfluoride, being partially transmissive is disposed in front of the entrance window of the cuvette, and a selecting cuvette is insertible in front of this second detector.

    摘要翻译: 一种红外光度计,具有具有入口和出口窗口的测量比色皿和优选由聚偏二氟乙烯制成的输出检测器; 确定由聚偏二氟乙烯制成的第二红外线检测器部分透射设置在反应杯的入口窗口的前面,并且选择试管可插入第二检测器的前面。

    Radiation detection and receiving in nondispersive infrared gas analyzer
    9.
    发明授权
    Radiation detection and receiving in nondispersive infrared gas analyzer 失效
    非分散型红外气体分析仪中的辐射检测和接收

    公开(公告)号:US4373137A

    公开(公告)日:1983-02-08

    申请号:US159115

    申请日:1980-06-13

    IPC分类号: G01N21/61 G01N21/37 G01J1/00

    CPC分类号: G01N21/37 G01N21/61

    摘要: The chopped infrared radiation leaving a measuring and sample gas chamber in an infrared gas analyzer is passed through and into two serially arranged detection chambers which are connected to a differential pressure chamber with capacitive pickup. The chambers are filled with gas of the type whose concentration, in the sample gas, is to be detected. One of the detector chambers contains a thin black wire, a diaphragm on the outside may shield an adjustable portion of that wire from radiation. The wire absorbs all radiation it intercepts and heats the environment.

    摘要翻译: 在红外线气体分析仪中离开测量和样品气室的切碎的红外辐射通过并连接到具有电容拾取器的差压室的两个连续布置的检测室中。 这些室充满了要在样品气体中检测浓度的气体。 检测器室中的一个包含细黑色线,外部的隔膜可以屏蔽该电线的可调部分与辐射。 电线吸收其截取的所有辐射并加热环境。

    Nondispersive infrared gas analyzer
    10.
    发明授权
    Nondispersive infrared gas analyzer 失效
    非分散型红外线气体分析仪

    公开(公告)号:US4281248A

    公开(公告)日:1981-07-28

    申请号:US145364

    申请日:1980-04-30

    CPC分类号: G01N21/37 G01N21/61

    摘要: The cross-sensitivity of a two-beam infrared gas analyzer is reduced by using two differently long cells for the sample gas in the two beam paths. The path with the short sample gas cell is intercepted by a detector cell having highly absorbing wall while the detector cell in the other path is highly reflective, e.g., made of gold. The two detector cells are interconnected by a differential pressure chamber with capacitive pickup.

    摘要翻译: 通过对两个光束路径中的样品气体使用两个不同长度的单元来减少双光束红外气体分析仪的交叉灵敏度。 具有短样品气体池的路径被具有高吸收壁的检测器单元截取,而另一路径中的检测器单元是高反射性的,例如由金制成。 两个检测器单元通过具有电容拾取器的差压室互连。