Capacitive level gage

1968 ◽  
Vol 4 (6) ◽  
pp. 521-523
Author(s):  
Yu. D. Vidineev ◽  
V. I. Kabanov ◽  
A. L. Bakhrakh
Keyword(s):  
Level Gage ◽  
Capacitive Level

Hermetically sealed level gage

1975 ◽  
Vol 11 (12) ◽  
pp. 1123-1124
Author(s):  
Yu. F. Bodyakin ◽  
R. V. Kozminskii ◽  
Yu. I. Cherchagin
Keyword(s):  
Level Gage

Design of Self-Compensated High Accuracy Fuel Level Sensor

2013 ◽  
Vol 281 ◽  
pp. 23-27
Author(s):  
Mei Yuan ◽  
Si Si Xiong ◽  
Shao Peng Dong
Keyword(s):  
Data Analysis ◽  
Sampling Technique ◽  
High Accuracy ◽  
Initial Position ◽  
The Self ◽  
Level Measurement ◽  
Level Sensor ◽  
Capacitive Level ◽  
Fuel Level ◽  
Adhesion Effect

A brand new self-compensated capacitive fuel level sensor has been proposed in this paper. Through mathematics manipulation and theoretical analysis, we design the self-compensated structure of capacitive level sensor. The multiple segmentation structure makes compensation for temperature and medium possible. Furthermore, the effect caused by adhesion on the sensor electrodes if the adhesion fails to return initial position when the plane’s attitude is changing has been analyzed. Additionally, based on RF admittance theory, the transducer which can eliminate the adhesion effect has been designed and implemented using phase-locked sampling technique. Through level experiment and data analysis, the fuel level sensor proved to achieve all the destinations, including compensation for temperature and medium and elimination of adhesion effect. Hence, the accuracy of level measurement has been improved.

Construction of capacitive level gauges

1961 ◽  
Vol 4 (10) ◽  
pp. 835-838
Author(s):  
K. B. Karandeev ◽  
F. B. Grinevich ◽  
A. I. Novik
Keyword(s):  
Capacitive Level

Impact of high flows of an Arctic river on ring widths of floodplain trees

The Holocene ◽  
2020 ◽  
Vol 30 (6) ◽  
pp. 789-798
Author(s):  
David M Meko ◽  
Irina P Panyushkina ◽  
Leonid I Agafonov ◽  
Julie A Edwards
Keyword(s):  
Tree Ring ◽  
Binary Classification ◽  
Classification Tree ◽  
Ring Width ◽  
High Flow ◽  
Growth Responses ◽  
Level Gage ◽  
Riparian Trees ◽  
Novel Approach ◽  
Extreme Flood

The tree-ring signal for flooding along the Ob River, a large Arctic River in western Siberia, is investigated using a combination of floodplain tree-ring sites from riparian and non-riparian settings. A conceptual model is presented contrasting tree-growth responses of riparian and non-riparian trees to unusually severe flooding. A set of five riparian ( Salix and Populus) tree-ring chronologies is developed and used in combination with existing floodplain non-riparian Larix and Pinus chronologies in a binary classification tree (CT) model to classify high-flood years, defined as a Salekhard water-level gage reading in the seasonal window from May 1 to August 31 of above 470 cm for 82 or more consecutive days. Correlation and regression identifies a nonlinear relationship of riparian ring widths to discharge and flooding: higher annual discharge generally leads to higher growth, but the relationship reverses in extreme-flood years. Micrographs highlight the suppression of width and occasional distortion of cell anatomy in selected trees. CT modeling guided by cross-validation yields a CT model with a primary split on the riparian ring width and secondary split on the non-riparian ring width. The model successfully identifies four of the eight most severe high-flow years, 1934–2014. The model further identifies two years (1885 and 1914) before the start of the gaged record in 1934 as high-flow years. No appreciable difference is found in frequency of high-flow years before and after 1956, when the first major reservoirs began filling upstream of the Lower Ob. The CT modeling approach is proposed as a novel approach to dealing with nonlinearity in reconstructing flood history of Arctic rivers from tree rings.

scholarly journals The study of ultrasonic reflex-radar waveguide coolant level gage for a nuclear reactor

2016 ◽  
Vol 2 (1) ◽  
pp. 37-41 ◽  
Author(s):  
V.I. Mel'nikov ◽  
V.V. Ivanov ◽  
I.A. Teplyashin
Keyword(s):  
Nuclear Reactor ◽  
Level Gage
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