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    Titration apparatus and titration method
    1.
    发明授权
    Titration apparatus and titration method 有权

    公开(公告)号：US11885781B2

    公开(公告)日：2024-01-30

    申请号：US17124013

    申请日：2020-12-16

    申请人： Endress+Hauser Conducta GmbH+Co. KG

    发明人： Ulrich Kathe ,  Daniel Schweitzer ,  Michael Ingelmann

    IPC分类号： G01N31/16 ,  G01N1/14 ,  G01N35/10

    CPC分类号： G01N31/166 ,  G01N1/14 ,  G01N35/1016 ,  G01N2001/1427

    摘要： A titration apparatus includes a titration measuring cell with a titration vessel, a valve device, and a first pump for sucking liquid through a first fluid line into a temporary storage container and transporting it via a second fluid line into the titration vessel. The temporary storage container is arranged in a fluid path between the first pump and the valve device. A third fluid line connects the first pump to the temporary storage container and is filled with a working liquid that does not affect the titration. A second pump conveys a volumetric solution into the titration vessel. An electronic controller controls the first and the second pumps and the valve device to convey a liquid from the first liquid supply into the temporary storage container to transport the liquid into the titration vessel and transport the volumetric solution into the titration vessel to carry out titration.

    Method for determining and monitoring constituent concentration of an aqueous metalworking fluid
    2.
    发明授权
    Method for determining and monitoring constituent concentration of an aqueous metalworking fluid 失效
    用于确定和监测含水金属加工液的成分浓度的方法

    公开(公告)号：US5389546A

    公开(公告)日：1995-02-14

    申请号：US230445

    申请日：1994-04-20

    申请人： Giles J. P. Becket

    发明人： Giles J. P. Becket

    IPC分类号： G01N31/16

    CPC分类号： G01N31/164 ,  G01N31/166 ,  Y10T436/11 ,  Y10T436/115831 ,  Y10T436/116664 ,  Y10T436/117497

    摘要： The total alkalinity of an aqueous metalworking fluid is monitored and controlled by a continuous titration method that continuously supplies a stream of the metalworking fluid, at a known, controllable flow rate, to a flow through chamber having therein a static mixing element. Simultaneously and separately a stream of acid titrant, of known acid concentration is injected into the flow through chamber at a known controllable flow rate. The acid titrant and metalworking fluid mix and react in the chamber and the reacted metalworking fluid exiting the chamber passed over the tip of a pH electrode. The pH of the reacted metalworking fluid is continuously monitored and the output of the pH electrode used to adjust the flow of acid titrant to the chamber until an endpoint pH valve (typically a pH of 4) is reached. The total alkalinity is then determined from a) the known flow rates of the aqueous metalworking fluid and acid titrant and the known acid concentration of the titrant or may be determined from calibration curves for XY coordinate plots of volume of titrant vs known metalworking fluid concentration.

    摘要翻译： 通过连续滴定方法监测和控制含水金属加工液的总碱度，该连续滴定方法以已知的可控流速连续提供金属加工流体流到具有静态混合元件的流通室。 同时并且分开地将已知酸浓度的酸流以已知的可控流速注入流通室。 酸性滴定剂和金属加工液在室中混合和反应，并且离开室的反应的金属加工流体通过pH电极的尖端。 连续监测反应的金属加工液体的pH值，并且用于调节酸性滴定剂流向腔室的pH电极的输出直到达到终点pH阀（通常为pH4）。 然后根据a）已知的水性金属加工液和酸性滴定剂的流量和滴定剂的已知酸浓度来确定总碱度，或者可以通过滴定剂体积与已知金属加工液浓度的XY坐标图的校准曲线来确定总碱度。

    Titrating system
    4.
    发明授权
    Titrating system 失效
    投标系统

    公开(公告)号：US3864087A

    公开(公告)日：1975-02-04

    申请号：US35984573

    申请日：1973-05-14

    申请人： BLOCK ENGINEERING

    发明人： HIRSCHFELD TOMAS

    IPC分类号： G01N31/16 ,  G01N21/08 ,  G01N21/06

    CPC分类号： G01N31/166 ,  Y10T436/255

    摘要： A chemical measuring system of the titration type comprises an elongated, hollow conduit, the walls of which are formed of a porous membrane. The conduit is suspended in a body of titrant. In operation a sample fluid is passed through the conduit. Titrant permeates the walls of the conduit and reacts with the sample. An end point is observed by an observable change at some position along the conduit, that position being proportional to the concentration of the sample.

    摘要翻译： 滴定型化学测量系统包括细长的中空导管，其壁由多孔膜形成。 导管悬挂在滴剂体内。 在操作中，样品流体通过导管。 滴定剂渗透导管的壁并与样品反应。 通过在导管的某个位置处的可观察的变化观察到终点，该位置与样品的浓度成比例。

    Titration method using a tracer to quantify the titrant
    8.
    发明申请
    Titration method using a tracer to quantify the titrant 有权
    滴定法使用示踪剂量化滴定剂

    公开(公告)号：US20070231910A1

    公开(公告)日：2007-10-04

    申请号：US11698594

    申请日：2007-01-26

    申请人： Michael DeGrandpre ,  Todd Martz ,  Andrew Dickson

    发明人： Michael DeGrandpre ,  Todd Martz ,  Andrew Dickson

    IPC分类号： G01N31/22 ,  G01N31/16

    CPC分类号： G01N31/22 ,  G01N31/16 ,  G01N31/166 ,  Y10T436/13

    摘要： A titration method uses a tracer in the titrant or titrand to quantify the amount of titrant added. The method does not require quantitative addition of titrant or sample. The tracer can be inert or can participate as an indicator of the titrant-analyte reaction. The tracer concentration is quantified by an appropriate method depending upon the type of tracer and analytical performance desired (e.g. precision, accuracy). The method simplifies titrations because it eliminates the need for a precision dispensing device and analytical balance.

    摘要翻译： 滴定法使用滴定剂或滴定剂中的示踪剂来量化添加的滴定剂的量。 该方法不需要定量添加滴定剂或样品。 示踪剂可以是惰性的或可以作为滴定剂 - 分析物反应的指示剂参与。 取决于示踪剂的类型和所需的分析性能（例如精度，精度），通过适当的方法量化示踪剂浓度。 该方法简化滴定，因为它消除了对精密分配装置和分析天平的需要。

    Continuous flow titration
    9.
    发明授权
    Continuous flow titration 失效

    公开(公告)号：US07153695B2

    公开(公告)日：2006-12-26

    申请号：US10097643

    申请日：2002-03-15

    申请人： Johan Roeraade ,  Matthew Rice

    发明人： Johan Roeraade ,  Matthew Rice

    IPC分类号： G01N31/16

    CPC分类号： G01N31/166 ,  Y10T436/116664

    摘要： The present invention relates to a method for titration comprising guiding a sample to be titrated through a conduit, adding a reagent to said conduit at at least two entrance positions along said conduit in such a manner that said reagent will react with the sample within at least one individual sector of the conduit, defined as the space between two consecutive entrance positions or a final individual sector defined between a final entrance position and a sample exit point of the conduit, while at least one detection device positioned at the end of each sector of said conduit register the chemical and/or physical status. A pressure difference is provided between the reagent delivery device and the sample conduit such that the pressure difference measured between the reagent delivery device and the end of the final individual sector is controlled to be greater than the total pressure drop between the sample delivery point and the end of the final individual sector. The invention further relates to an arrangement for carrying out said method.

    Analytic appparatus and method
    10.
    发明授权
    Analytic appparatus and method 失效
    分析方法和方法

    公开(公告)号：US5080866A

    公开(公告)日：1992-01-14

    申请号：US631179

    申请日：1990-12-19

    申请人： John D. Petty ,  Russell M. Peachey ,  Denis R. Sweatman

    发明人： John D. Petty ,  Russell M. Peachey ,  Denis R. Sweatman

    IPC分类号： G01N1/00 ,  G01N31/16 ,  G01N33/04 ,  G01N35/08

    CPC分类号： G01N35/085 ,  G01N31/166 ,  G01N33/04 ,  G01N35/1095 ,  Y10T436/116664 ,  Y10T436/117497 ,  Y10T436/118339 ,  Y10T436/119163

    摘要： A method of analysis in which a first fluid is delivered to a sensing position at a controlled first rate of flow through a fluid junction. Fluid including this first fluid is pumped to the sensing position at a rate of flow greater than the first rate, whereby to aspirate further fluid into the first fluid at the fluid junction. A condition of the fluid is sensed at the sensing position. Associated analytic apparatus includes first and second pumps (1, 2). The first pump has a pair of ports and the second pump has at least one port. A conduit (4, 5) provides fluid flow communication from a first of the ports of the first pump (1) to the port of the second pump (2). A fluid junction (3) in the conduit (4, 5) is spaced from the second pump for admitting a further fluid to the conduit. A sensor (13) is associated with the conduit (5) to sense a condition of the fluid in the conduit at least at a sensing position between the fluid junction (3) and the second pump (2). The first and second pumps (1, 2) are respectively operable to deliver a first fluid to the conduit at a controllable first rate and to draw fluid from the conduit at a rate greater than this first rate, whereby to aspirate further fluid into the conduit at the fluid junction.

    摘要翻译： 一种分析方法，其中第一流体以受控的第一流速通过流体结输送到感测位置。 包括该第一流体的流体以大于第一速率的流量被泵送到感测位置，由此在流体连接处将另外的流体吸入第一流体。 在感测位置处感测流体的状态。 相关的分析装置包括第一和第二泵（1,2）。 第一泵具有一对端口，第二泵具有至少一个端口。 导管（4,5）提供从第一泵（1）的第一端口到第二泵（2）的端口的流体流动连通。 导管（4,5）中的流体接头（3）与第二泵间隔开，用于将另外的流体引入导管。 传感器（13）与导管（5）相关联，以至少在流体结（3）和第二泵（2）之间的感测位置处感测管道中的流体的状态。 第一和第二泵（1,2）分别可操作以以可控的第一速率将第一流体输送到导管，并以大于该第一速率的速率从导管抽出流体，从而将进一步的流体吸入管道 在流体接头处。