Hollow Electrode Capillary Plasma Ionization Source for Rapid On‐line Detection of Gaseous Samples

2021 ◽  
Author(s):  
Wen Xu ◽  
Zeyue Shen ◽  
Junliang Zhang ◽  
Tengyu Zhang ◽  
Huanming Wu ◽  
...  
Keyword(s):  
Line Detection ◽  
Ionization Source ◽  
Plasma Ionization ◽  
Hollow Electrode ◽  
On Line

A Novel Gas Sensor for Chemicals On-Line Detection in Transportation

2015 ◽  
Vol 738-739 ◽  
pp. 46-49
Author(s):  
Dong Jie Zhao ◽  
Jun Liu ◽  
Fang Yan ◽  
Yan Xu
Keyword(s):  
Gas Phase ◽  
Gas Sensor ◽  
Ion Mobility ◽  
High Sensitivity ◽  
Line Detection ◽  
Asymmetric Waveform ◽  
Ionization Source ◽  
Product Gas ◽  
On Line ◽  
Gas Phase Ion

With concern for chemicals leak in transportation, there is an urgent need for a sensor which can quickly and accurately detect chemicals. In this study, a high-sensitivity gas sensor was demonstrated, which is based on high-field asymmetric waveform ion mobility spectrometry technology with corona discharge (CD) used as the ionization source to product gas-phase ion samples, which can get the response in one second. The effects of dispersion voltage and moisture were investigated.

Development of Glucose On-line Detection System for Fermentation Process

2013 ◽  
Vol 40 (12) ◽  
pp. 1945-1949
Author(s):  
Xue-Jin GAO ◽  
Guang-Sheng LIU ◽  
Li CHENG ◽  
Ling-Xiao GENG ◽  
Ji-Xing XUE ◽  
...  
Keyword(s):  
Fermentation Process ◽  
Detection System ◽  
Line Detection ◽  
On Line

Research Situation Analysis of On-line Detection Technology for Power Transformer Winding Deformation

2020 ◽  
Vol 13 (6) ◽  
pp. 823-832
Author(s):  
Zhenhua Li ◽  
Weihui Jiang ◽  
Li Qiu ◽  
Zhenxing Li ◽  
Yanchun Xu
Keyword(s):  
Detection Method ◽  
Theoretical Research ◽  
Line Detection ◽  
Response Analysis ◽  
Advantages And Disadvantages ◽  
Detection Technology ◽  
The Future ◽  
Transformer Winding ◽  
On Line ◽  
Winding Deformation

Background: Winding deformation is one of the most common faults in power transformers, which seriously threatens the safe operation of transformers. In order to discover the hidden trouble of transformer in time, it is of great significance to actively carry out the research of transformer winding deformation detection technology. Methods: In this paper, several methods of winding deformation detection with on-line detection prospects are summarized. The principles and characteristics of each method are analyzed, and the advantages and disadvantages of each method as well as the future research directions are expounded. Finally, aiming at the existing problems, the development direction of detection method for winding deformation in the future is prospected. Results: The on-line frequency response analysis method is still immature, and the vibration detection method is still in the theoretical research stage. Conclusion: The ΔV − I1 locus method provides a new direction for on-line detection of transformer winding deformation faults, which has certain application prospects and practical engineering value.

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