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。