公开(公告)号：US5160843A

公开(公告)日：1992-11-03

申请号：US731971

申请日：1991-07-18

Applicant: Ari Lehto

Inventor： Ari Lehto

IPC: G01N9/24 ,  G01J3/10 ,  G01N21/35

CPC classification number: G01J3/108 ,  G01N21/3504 ,  G01N2201/06173

Abstract: An apparatus and method measures the concentration of a gas. The apparatus comprises a radiation source (70) for emitting radiation onto the gas (79) to be measured, whereby the radiation source (70) is comprised of an anode (4) and a cathode (9), and as an emitting fill gas the same as the gas (79) to be measured; and a radiation detector (74) with which the radiation transmitted through the gas (79) to be measured can be detected. The cathode (9) functions as an electron emitter, and between the anode (4) and the cathode is connected such a low operating voltage that does not cause ionization or essential dissociation of the emitting gas. The design provides an approximate temperature tracking of the radiation source with the ambient temperature.

公开(公告)号：US4780613A

公开(公告)日：1988-10-25

申请号：US909706

申请日：1986-09-22

Applicant: Lawrence S. Berstein ,  Michael W. Matthew ,  Fritz Bien

Inventor： Lawrence S. Berstein ,  Michael W. Matthew ,  Fritz Bien

IPC: G01J3/10 ,  G01N21/35 ,  H01J65/04

CPC classification number: G01J3/108 ,  G01N21/3504 ,  G01N2201/06173

Abstract: An infrared species specific emission source which includes a closed container having at least one transparent portion for containing at least one specific molecular species. The molecular species within the container is heated sufficiently to cause the species to emit a characteristic infrared spectal emission through the at least one transparent portion of the container to the infrared instrument.

Abstract translation: 一种红外物质特异性发射源，其包括具有至少一个用于含有至少一种特定分子种类的透明部分的密闭容器。 将容器内的分子种类充分加热，使物质通过容器的至少一个透明部分向红外线仪器发出特征红外光谱发射。

公开(公告)号：EP0469733A3

公开(公告)日：1992-05-27

申请号：EP91306271.7

申请日：1991-07-11

Applicant: VAISALA OY

Inventor： Lehto, Ari

IPC: G01J3/10 ,  G01N21/35

CPC classification number: G01J3/108 ,  G01N21/3504 ,  G01N2201/06173

Abstract: The present invention relates to an apparatus and method for measuring the concentration of a gas. Said apparatus comprises a radiation source (70) for emitting radiation onto the gas (79) to be measured, whereby said radiation source (70) is comprised of an anode (4) and a cathode (9), and as an emitting fill gas the same gas as the gas (79) to be measured; and a radiation detector (74) with which the radiation transmitted through the gas (79) to be measured can be detected. According to the invention the cathode (9) functions as an electron emitter, and between said anode (4) and said cathode is connected such a low operating voltage that does not cause ionization or essential dissociation of the emitting gas. The design according to the invention provides an approximate temperature tracking of the radiation source with the ambient temperature.

Abstract translation: 本发明涉及一种用于测量气体浓度的装置和方法。 所述装置包括用于向待测量的气体（79）发射辐射的辐射源（70），由此所述辐射源（70）由阳极（4）和阴极（9）构成，并且作为发射填充气体 与要测量的气体（79）相同的气体; 以及辐射检测器（74），通过该辐射检测器可以检测透过待测量气体（79）的辐射。 根据本发明，阴极（9）用作电子发射体，并且在所述阳极（4）和所述阴极之间连接这样低的工作电压，其不会引起发射气体的电离或必要的解离。 根据本发明的设计提供了辐射源与环境温度的近似温度跟踪。

公开(公告)号：EP0469733A2

公开(公告)日：1992-02-05

申请号：EP91306271.7

申请日：1991-07-11

Applicant: VAISALA OY

Inventor： Lehto, Ari

IPC: G01J3/10 ,  G01N21/35

CPC classification number: G01J3/108 ,  G01N21/3504 ,  G01N2201/06173

Abstract: The present invention relates to an apparatus and method for measuring the concentration of a gas. Said apparatus comprises a radiation source (70) for emitting radiation onto the gas (79) to be measured, whereby said radiation source (70) is comprised of an anode (4) and a cathode (9), and as an emitting fill gas the same gas as the gas (79) to be measured; and a radiation detector (74) with which the radiation transmitted through the gas (79) to be measured can be detected. According to the invention the cathode (9) functions as an electron emitter, and between said anode (4) and said cathode is connected such a low operating voltage that does not cause ionization or essential dissociation of the emitting gas. The design according to the invention provides an approximate temperature tracking of the radiation source with the ambient temperature.

Abstract translation: 本发明涉及一种用于测量气体浓度的装置和方法。 所述装置包括用于向待测量的气体（79）发射辐射的辐射源（70），由此所述辐射源（70）由阳极（4）和阴极（9）构成，并且作为发射填充气体 与要测量的气体（79）相同的气体; 以及辐射检测器（74），通过该辐射检测器可以检测透过待测量气体（79）的辐射。 根据本发明，阴极（9）用作电子发射体，并且在所述阳极（4）和所述阴极之间连接这样低的工作电压，其不会引起发射气体的电离或必要的解离。 根据本发明的设计提供了辐射源与环境温度的近似温度跟踪。