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    • 1. 发明申请
    • MID-INFRARED ACID SENSOR
    • 中红外传感器
    • WO2016044017A1
    • 2016-03-24
    • PCT/US2015/049086
    • 2015-09-09
    • SCHLUMBERGER CANADA LIMITEDSERVICES PETROLIERS SCHLUMBERGERSCHLUMBERGER HOLDINGS LIMITEDSCHLUMBERGER TECHNOLOGY B.V.PRAD RESEARCH AND DEVELOPMENT LIMITEDSCHLUMBERGER TECHNOLOGY CORPORATION
    • JONES, TimothyLAWRENCE, NathanFUJISAWA, GoCHAO, ShengLI, Jiang
    • G01N21/3577G01N21/05
    • G01N21/3577G01N21/552
    • A sensor is provided for monitoring a mineral acid dissolved in a liquid. The sensor includes an internal reflection window which, in use, is in direct contact with the liquid. The sensor further includes a mid-infrared light source which directs a beam of mid-infrared radiation into said window for attenuated internal reflection at an interface between the window and the liquid. The sensor further includes a first narrow bandpass filter which preferentially transmits mid-infrared radiation over a band of wavelengths corresponding to an absorbance peak of the dissolved mineral acid to filter internally reflected mid-infrared radiation received from the window. The sensor further includes an infrared detector which detects filtered mid-infrared radiation transmitted through the first filter. The sensor further includes a processor arrangement, operably coupled to the infrared detector, which measures the intensity of the detected mid-infrared radiation transmitted through the first filter, and determines therefrom an amount of the mineral acid dissolved in the liquid.
    • 提供了一种用于监测溶解在液体中的无机酸的传感器。 传感器包括在使用中与液体直接接触的内部反射窗口。 该传感器还包括一个中红外光源,它将一束中红外辐射引导到所述窗口中以在窗口和液体之间的界面处衰减内反射。 传感器还包括第一窄带通滤波器,其优先在对应于溶解的无机酸的吸收峰的波长带上传输中红外辐射,以过滤从窗口接收的内部反射的中红外辐射。 传感器还包括红外检测器,其检测经过第一过滤器传输的过滤的中红外辐射。 传感器还包括可操作地耦合到红外检测器的处理器装置,其测量通过第一过滤器传输的检测到的中红外辐射的强度,并从其确定溶解在液体中的无机酸的量。
    • 2. 发明申请
    • ELECTROCHEMICAL SENSOR FOR PH MEASUREMENT
    • 电化学传感器用于PH测量
    • WO2013093899A1
    • 2013-06-27
    • PCT/IB2012/057695
    • 2012-12-24
    • SCHLUMBERGER TECHNOLOGY B.V.SCHLUMBERGER HOLDINGS LIMITEDSCHLUMBERGER CANADA LIMITEDSERVICES PETROLIERS SCHLUMBERGERPRAD RESEARCH AND DEVELOPMENT LIMITEDSCHLUMBERGER TECHNOLOGY CORPORATION
    • LAWRENCE, NathanMEREDITH, Andrew
    • G01N27/30G01N27/416
    • G01N27/302
    • A method of determining the pH of an aqueous liquid which contains little or no buffer, such as does not contain more than 0.01 moles per litre of pH-buffering partially dissociated acid, base and/or salt, uses an electrode with at least one redox active compound immobilized thereon convertible electrochemically between reduced and oxidized forms with transfer of at least one proton between the compound and the aqueous liquid. Varying potential is applied to the electrode, observing current flow as potential is varied, determining the applied potential at a maximum current for redox reaction of the compound, and determining pH from the potential at maximum current. The electrode has a covering layer which separates the redox active compound from the aqueous liquid but selectively allows the passage of hydrogen ions between the redox active compound and the aqueous liquid. The presence of the covering layer enhances accuracy of the measurement of pH of the aqueous liquid.
    • 确定含有很少或没有缓冲液的水性液体的pH值的方法,例如不超过0.01摩尔每升pH缓冲部分解离的酸,碱和/或盐,使用具有至少一种氧化还原电极 固定在其上的活性化合物在还原和氧化形式之间电化学转化,同时在化合物和含水液体之间转移至少一个质子。 对电极施加不同的电位,随着电位的变化观察电流,确定化合物的氧化还原反应的最大电流下的施加电位,并从最大电流的电位测定pH。 电极具有将氧化还原活性化合物与水性液体分离的覆盖层,但是选择性地允许氢氧离子在氧化还原活性化合物和含水液体之间通过。 覆盖层的存在提高了水性液体的pH的测量的准确性。