GAS MEASURING DEVICE AND GAS MEASURING DEVICE FOR MEASURING OF A TARGET GAS CONCENTRATION AND AN AMBIENT HUMIDITY

    公开(公告)号:US20240053286A1

    公开(公告)日:2024-02-15

    申请号:US18366821

    申请日:2023-08-08

    IPC分类号: G01N25/46

    CPC分类号: G01N25/46

    摘要: A gas measuring device (100) and a gas measuring process measure a concentration of a combustible target gas (CH4). A detector (10), having a detector heating segment (20), oxidizes combustible target gas. A compensator (11) having a compensator heating segment (30) oxidizes less or no target gas. A temperature sensor (14) measures the ambient temperature. A first detection variable (ΔU_B) depends on the detector temperature, a second detection variable (U11) depends on the compensator temperature. An evaluation unit (9) applies a first and a second functional relationship in order to determine, depending on the two detection variables (ΔU_B, U11), both the target gas concentration and a further environmental condition, particularly the ambient humidity. The second functional relationship, a dependence between the further environmental condition on the one hand and the detection variables and the ambient temperature on the other hand, is valid if no target gas is present.

    Systems and methods for non-flammable indication of incendivity

    公开(公告)号:US10145834B2

    公开(公告)日:2018-12-04

    申请号:US15214214

    申请日:2016-07-19

    IPC分类号: G01N33/22 G01N31/12 G01N25/46

    摘要: Incendivity test systems and methods are disclosed. Incendivity test systems include a non-flammable gas mixture and a test article in a test chamber. The non-flammable gas mixture includes a thermally reactive reagent that is formulated to thermally react to produce a reaction product. Incendivity test systems also include an energy source configured to apply an energy discharge such as a simulated lightning strike to the test article. Incendivity test systems also include a detection device configured to measure an indicator species in the non-flammable gas mixture (e.g., the thermally reactive reagent and/or the reaction product). Incendivity test methods include contacting the test article with the non-flammable gas mixture, applying the energy discharge to the test article, and then measuring the amount of the indicator species and determining the incendivity of the test article in response to the energy discharge based upon the amount of the indicator species.

    Long-term stable optical sensor arrangement, especially a hydrogen sensor, and combined gas sensor arrangement
    9.
    发明授权
    Long-term stable optical sensor arrangement, especially a hydrogen sensor, and combined gas sensor arrangement 有权
    长期稳定的光学传感器布置,特别是氢传感器,以及组合的气体传感器装置

    公开(公告)号:US07977638B2

    公开(公告)日:2011-07-12

    申请号:US11941604

    申请日:2007-11-16

    IPC分类号: G01N21/61 G01N25/46

    摘要: The present invention relates to optical sensor arrangements, especially sensors of the type that can be used in motor vehicles and which can detect hydrogen in a gaseous measured medium. According to the invention, an optical sensor arrangement has the at least one radiation source (108) for emitting radiation, the at least one measuring transducer which modifies its optical characteristics in response to the presence and/or concentration of at least one analyte in a measured medium (104) and is arranged so that it interacts with at least part of the emitted radiation (110), a first detector unit (112) for capturing a change in radiant intensity due to the changed optical characteristics of the measuring transducer and for outputting a first measuring signal and a light conducting body (106) which is transparent to the emitted radiation, wherein the measuring transducer, which is sensitive to the analyte, is arranged on at least one surface of the light conducting body (106) so that the emitted radiation impinges on a surface of the measuring transducer which faces away from the measured medium (104).

    摘要翻译: 本发明涉及光学传感器装置,特别是可用于机动车辆并且可以检测气体测量介质中的氢的类型的传感器。 根据本发明,光学传感器装置具有用于发射辐射的至少一个辐射源(108),该至少一个辐射源(108)响应于至少一个分析物的存在和/或浓度来修改其光学特性 测量介质(104)并且被布置成使得其与所发射的辐射(110)的至少一部分相互作用;第一检测器单元(112),用于捕获由于测量换能器的改变的光学特性引起的辐射强度变化,并且 输出对所发射的辐射透明的第一测量信号和导光体(106),其中对分析物敏感的测量传感器布置在导光体(106)的至少一个表面上,使得 所发射的辐射照射在远离所测量的介质(104)的测量传感器的表面上。

    Method and apparatus for the optimum blending of lubricating base oils and an additive
    10.
    发明授权
    Method and apparatus for the optimum blending of lubricating base oils and an additive 失效
    润滑基油和添加剂的最佳混合方法和装置

    公开(公告)号:US3826904A

    公开(公告)日:1974-07-30

    申请号:US29506072

    申请日:1972-10-04

    申请人: TEXACO INC

    发明人: LEONARD J LEWIS J

    IPC分类号: G01N33/28 G01N25/46 F23M5/00

    摘要: A method and apparatus for enabling the computation of a minimum cost blend of lubricating oil base stocks, wherein a viscosity index improver additive is included. System includes measurement of viscosity and related data at two separate concentrations of the additive where such concentrations are in the range from about 1 percent to about 10 percent of the additive with a given base oil. Data obtained are used in non-linear formulae to provide bases for calculating optimum blends to obtain particular specifications with minimum cost.

    摘要翻译: 一种能够计算含有粘度指数改进剂添加剂的润滑油基础油的最低成本混合物的方法和装置。 系统包括在两种分开的添加剂浓度下测量粘度和相关数据,其中这些浓度在给定基础油中的添加剂的约1%至约10%的范围内。 所获得的数据用于非线性公式,为计算最佳混合物提供基础,以最小成本获得特定规格。