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    Nitrogen constituent analysis
    1.
    发明授权
    Nitrogen constituent analysis 失效
    氮成分分析

    公开(公告)号：US3877875A

    公开(公告)日：1975-04-15

    申请号：US38074073

    申请日：1973-07-19

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： JONES ROBERT H ,  JOHNSTON MICHAEL B

    IPC: G01N31/00 ,  G01N25/22

    CPC classification number: G01N31/005 ,  Y10T436/172307 ,  Y10T436/176152

    Abstract: A unitary system is provided with separate channels for detecting and analyzing different types of nitrogen-containing compounds, particularly those which may be encountered in waste treatment or in pollution control or in food product analysis. The channels are so designed that an injected sample is acted upon in gaseous or suspended form, with reaction products thereof carried through the system by carried gas and ultimately converted to nitric oxide for analysis in a nitric oxide analyzer. Each channel contains reaction columns packed with a suitable substance. There is a total combined nitrogen channel in which a sample is first catalytically oxidized to form nitric oxides. In a nitrite-nitrate nitrogen channel a sample is first treated to form nitrites and injected into a reaction column packed with an acidifying substance and in an ammonia nitrogen channel the sample is injected into a reaction column packed with an alkalyzer before proceeding to a reaction column packed to catalytically oxidize the resulting ammonia to nitrogen dioxide and nitric oxide. In a modified embodiment a suitably pretreated sample suspected of cyanide content may also ultimately be converted to nitric oxide for analysis.

    Abstract translation: 提供单一系统，用于检测和分析不同类型的含氮化合物，特别是在废物处理或污染控制或食品分析中可能遇到的那些。 通道被设计成使得注射的样品以气态或悬浮形式起作用，其反应产物通过载体气体运送到系统中，并最终转化为一氧化氮以在一氧化氮分析仪中进行分析。 每个通道都含有装有合适物质的反应塔。 存在总共合并氮通道，其中样品首先被催化氧化以形成一氧化氮。 在亚硝酸盐 - 硝酸盐氮气通道中，首先处理样品以形成亚硝酸盐并注入装有酸化物质的反应塔中，并且在氨氮通道中，将样品注入装有烷烃的反应塔中，然后再进行反应柱 包装以将所得氨催化氧化成二氧化氮和一氧化氮。 在修改的实施方案中，怀疑氰化物含量的适当预处理的样品也可最终转化为一氧化氮进行分析。

    Liquid transfer system
    2.
    发明授权
    Liquid transfer system 失效
    液体转移系统

    公开(公告)号：US3909205A

    公开(公告)日：1975-09-30

    申请号：US37971573

    申请日：1973-07-16

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： JONES ROBERT H

    IPC: B67D7/02 ,  B01L11/00 ,  G01N1/00

    CPC classification number: B67D7/02 ,  Y10T137/3127

    Abstract: A pneumatic transfer system is provided for supplying liquid from a storage vessel to the reservoir of a doser which dispenses fixed quantities of a liquid and maintaining the level of liquid in the reservoir substantially constant. The doser reservoir is at a higher elevation than the storage vessel. The vessel is closed at the top to form an air bell above the level of storage liquid with two tubes extending downward through the storage liquid from the top of the vessel. One tube forms a liquid supply tube connected to the doser reservoir below the liquid level therein and the other tube is a pressure supply tube, connected to a source of pneumatic pressure with a pressure regulator connected to the pressure supply tube. The pressure regulator comprises a column of liquid open at the top having a tube therein with an upper end connected to the pressure supply tube and the lower end extending downward into the liquid supply, so that the height of the liquid column determines the level of liquid which is restored in the doser reservoir because the pressures in the two tubes are the same.

    Abstract translation: 提供了一种气动输送系统，用于将液体从储存容器供给到分配固定数量的液体并保持储存器中的液体水平基本恒定的加料器的储存器。 加料器储存器的高度高于储存容器。 容器在顶部封闭以在储存液体的高度上形成空气钟，其中两个管从容器的顶部向下延伸穿过储存液体。 一个管形成液体供应​​管，该液体供应管连接到位于其下的液位下方的加料器储存器，另一个管是压力供应管，其连接到压力源，压力调节器连接到压力供应管。 压力调节器包括在顶部开口的液体柱，其中具有管，其上端连接到压力供应管，下端向下延伸到液体供应中，使得液柱的高度决定液体的水平 由于两个管中的压力相同，所以在加料器储存器中被恢复。

    Liquid sampling device
    3.
    发明授权
    Liquid sampling device 失效

    公开(公告)号：US3901653A

    公开(公告)日：1975-08-26

    申请号：US38090873

    申请日：1973-07-19

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： JONES ROBERT H ,  HUMMEL CHARLES V

    IPC: G01N1/00 ,  F04F1/00 ,  G01N1/10

    CPC classification number: G01N35/1095

    Abstract: A device for dispensing a predetermined quantity of a liquid sample has an S-shaped dosing tube with an inlet connected through a collecting vessel to an air supply for receiving air during vacuum, vent and pressure portions of an operation cycle and an outlet connected to deliver the sample to a recipient system. A supply tube connected to receive liquid from a source such as a process stream provides liquid to the dosing tube, during the vacuum portion of the cycle, through a transfer vessel operatively connected between the inlet and outlet. Liquid enters the transfer vessel from the supply tube at a level above that of liquid remaining in the dosing tube from a previous operation cycle. A drain tube is connected through the collecting vessel to the dosing tube to remove liquid in excess of the predetermined quantity prior to dispensing the sample. A liquid seal is provided in the tubes to prevent air escape and maintain pressure in the tubes. The device is especially adaptable to deliver a fresh sample for each operation cycle which is not mixed with liquid remaining in the device from a previous sample. Each cycle of operation is controlled by a programmer which provides signals to the air supply and the supply tube during vacuum, vent and pressure portions of each operation cycle.

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