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Photoionization measurement device and method

A photoionization and measurement device technology, applied in the field of detectors, can solve the problems of non-selectivity and inability to distinguish between benzene and toluene, and achieve the effect of improving accuracy

Pending Publication Date: 2021-07-30
上海雷密传感技术有限公司
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Problems solved by technology

[0002] In the prior art, the Photo Ionization Detector (PID for short) is not selective and cannot measure the gas to be measured in a targeted manner, which improves the accuracy of the gas to be measured
For example: when the gas to be measured is a mixture of benzene and toluene, the existing technology cannot distinguish between benzene and toluene and cannot choose to measure only benzene

Method used

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Embodiment Construction

[0025] The terms "first", "second", "third" and so on are only used for distinguishing descriptions, and do not represent sequence numbers, nor can they be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "left", "right", "upper", "lower" etc. are based on the Orientation or positional relationship, or the orientation or positional relationship that the application product is usually placed in use, is only for the convenience of describing the applic...

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Abstract

The invention relates to a photoionization measurement device and method. The photoionization measurement device comprises an ionization chamber, a light-emitting assembly, a measurement chamber and a detection assembly. The ionization chamber is configured to enable the light emitted by the light-emitting assembly to enter the ionization cavity so as to ionize the gas to be detected in the ionization cavity; the measurment chamber is provided with an outlet hole channel penetrating through the measurement chamber, and the outlet hole channel is communicated with the ionization cavity so that the ionized gas to be measured can flow out; and the detection assembly comprises a collecting electrode and a bias electrode which are electrically connected, and is used for detecting the ionized gas to be detected in the outlet hole channel. Therefore, the device has selectivity, the gas to be detected can be measured in a targeted manner, and the measurement accuracy of the gas to be detected is improved.

Description

technical field [0001] The present application relates to the field of detectors, in particular to a photoionization measuring device and method. Background technique [0002] In the prior art, a photo ionization gas detector (Photo Ionization Detector, PID for short) has no selectivity, and cannot specifically measure the gas to be measured, which improves the accuracy of the gas to be measured. For example: when the gas to be measured is a mixture of benzene and toluene, the existing technology cannot distinguish between benzene and toluene and cannot choose to measure only benzene. Contents of the invention [0003] The purpose of this application is to provide a photoionization measurement device and method, which is selective, can measure the gas to be measured in a targeted manner, and improves the accuracy of the gas to be measured. [0004] In order to achieve the above purpose, [0005] In the first aspect, the present application provides a photoionization meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/64
CPCG01N30/64G01N2030/642
Inventor 谢雷杨雁南沈飞宙
Owner 上海雷密传感技术有限公司
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