公开(公告)号：US5608212A

公开(公告)日：1997-03-04

申请号：US360258

申请日：1994-12-20

Applicant: Timo Merilainen ,  Borje Rantala ,  Kurt Weckstrom ,  Kai Karlsson

Inventor： Timo Merilainen ,  Borje Rantala ,  Kurt Weckstrom ,  Kai Karlsson

IPC: G01N21/61

CPC classification number: G01N21/61

Abstract: A method for calibrating a gas analyzer (1). A gas analyzer is calibrated by measuring the zero level of the analyzer (1). The level of the analyzer is measured, after a preceding reset, whenever a temperature variation (.DELTA.T) of an infrared sensor (14) included in the analyzer (1) or of a component thermally connected in a highly conductive manner thereto exceeds a predetermined threshold value (A), or the temperature variation rate (D) of the infrared sensor (14) of the analyzer (1) or of a component thermally connected in a highly conductive manner thereto exceeds a predetermined limit valve.

Abstract translation: 一种校准气体分析仪（1）的方法。 气体分析仪通过测量分析仪（1）的零电平进行校准。 测量分析仪的电平，在先前的复位之后，每当包括在分析仪（1）中的红外传感器（14）的温度变化（DELTA T）或以高度导电的方式热连接的部件的温度变化（DELTA T）超过预定值 分析器（1）的红外传感器（14）或以高导电方式热连接的部件的阈值（A）或温度变化率（D）超过预定的限制阀。

公开(公告)号：US5542285A

公开(公告)日：1996-08-06

申请号：US332692

申请日：1994-11-01

Applicant: Timo Merilainen ,  Borje Rantala ,  Kurt Weckstrom

Inventor： Timo Merilainen ,  Borje Rantala ,  Kurt Weckstrom

IPC: G01N21/35 ,  G01N21/17 ,  G01J5/12

CPC classification number: G01N21/3504 ,  G01N2201/0231 ,  G01N2201/1211

Abstract: The invention relates to a method and apparatus for temperature compensation in gas analyzer equipment for transient error caused by temperature change. According to the method, a radiation source (1) is used for transmitting electromagnetic radiation through a gas mixture to be analyzed, the intensity of radiation transmitted through the gas mixture being analyzed is detected by means of a thermal detector (4) comprising a radiation detecting sensor element (16) and a reference sensor element (17) for generating an output signal proportional to the concentration of gas being analyzed, the temperature of said thermal detector (4) is measured either directly or indirectly, the measured detector temperature values are recorded as a function of time, and the output signal of the thermal detector (4) is temperature compensated by a correction term dependent on the temperature rate of change (DT) of the thermal detector. According to the invention, the uncorrected output signal V.sub.mass of the thermal detector (4) is temperature compensated by adding a correction term V.sub.comp dependent on the temperature rate of change (DT) of the thermal detector to said output signal.

Abstract translation: 本发明涉及用于温度变化引起的瞬态误差的气体分析仪设备中的温度补偿方法和装置。 根据该方法，辐射源（1）用于通过要分析的气体混合物传输电磁辐射，通过被分析的气体混合物传播的辐射的强度通过包括辐射的热检测器（4）来检测 检测传感器元件（16）和参考传感器元件（17），用于产生与被分析的气体浓度成比例的输出信号，所述热检测器（4）的温度直接或间接测量，测量的检测器温度值 记录为时间的函数，并且热检测器（4）的输出信号通过取决于热检测器的温度变化率（DT）的校正项进行温度补偿。 根据本发明，热检测器（4）的未校正输出信号Vmass通过将取决于热检测器的温度变化率（DT）的校正项Vcomp加到所述输出信号来进行温度补偿。

公开(公告)号：US5747820A

公开(公告)日：1998-05-05

申请号：US499177

申请日：1995-07-07

Applicant: Kai Karlsson ,  Timo Merilainen ,  Kurt Weckstrom ,  Seppo Poikolainen

Inventor： Kai Karlsson ,  Timo Merilainen ,  Kurt Weckstrom ,  Seppo Poikolainen

IPC: G01J3/10

CPC classification number: G01J3/108

Abstract: The invention relates to an infrared radiation source for a gas analyzer and a method for generating infrared radiation. The infrared radiation source comprises a body (6), thermal insulation material (5) adapted inside the body (6), a radiant element (1) fitted inside the insulation material (5), elements (2, 3) for feeding electric energy to said radiant element (1), and a channel (7) formed in said body (6) and said thermal insulation material (5) in order to pass the radiation generated by said radiant element (1) to the gas under measurement. According to the invention, at least the thermal insulation material (5) adapted in close proximity to the radiant element (1) has a low thermal conductivity and the emissivity of the radiant surface (11) adapted in close proximity to the radiant element (1) is greater than 0.5 at the operating temperature of the source.

Abstract translation: 本发明涉及一种用于气体分析仪的红外辐射源和一种产生红外辐射的方法。 所述红外辐射源包括主体（6），适于所述主体（6）内部的绝热材料（5），安装在所述绝缘材料（5）内的辐射元件（1），用于馈送电能的元件（2,3） 到所述辐射元件（1）和形成在所述主体（6）和所述绝热材料（5）中的通道（7），以便将由所述辐射元件（1）产生的辐射传递到被测气体。 根据本发明，至少适于靠近辐射元件（1）的绝热材料（5）具有低热导率，辐射表面（11）的辐射率适合于辐射元件（1）附近 ）在源的工作温度下大于0.5。