Calibration of electrode polarization impedance type flow meter using neural network

2016 ◽  
Author(s):  
S. Sinha ◽  
N. Mandal ◽  
S. C. Bera
Keyword(s):  
Neural Network ◽  
Electrode Polarization ◽  
Flow Meter ◽  
Polarization Impedance ◽  
Type Flow

Feed-Forward Control of an Arbitrary Pressure Pulsation Generator and its Application to Testing an Orifice-Type Flow Meter

2014 ◽  
Author(s):  
Tomonori Kato ◽  
Tetsuma Hirakawa ◽  
Mitsuhiro Nakao ◽  
Takashi Oowaku ◽  
Hirohisa Sakuma ◽  
...  
Keyword(s):  
Pressure Pulsation ◽  
Zero Point ◽  
Flow Meter ◽  
Pressure Regulator ◽  
Flow Meters ◽  
Feed Forward ◽  
Servo Valve ◽  
Feed Forward Control ◽  
Type Flow ◽  
Zero Points

This paper presents a compact arbitrary pressure pulsation generator for assessing the characteristics of flow meters and sensors, particularly around their zero points. In this study, a compact arbitrary pressure pulsation generator was created using some pneumatic components, such as a high-precision quick-response pneumatic pressure regulator (HPR) and a spool-type servo-valve. The feed-forward compensation of the controller provided the desired pressure pulse to the tested flow meter by controlling the spool-type servo valve; 30 Hz was achieved. In order to validate the effectiveness of the developed generator, we evaluated the dynamic characteristics around the zero point of an orifice-type flow meter in the range from 1 Hz through 30 Hz.

Improving the structure of two-phase flow meter using feature extraction and GMDH neural network

2020 ◽  
Vol 171 ◽  
pp. 108725 ◽  
Author(s):  
Mohammad Amir Sattari ◽  
Gholam Hossein Roshani ◽  
Robert Hanus
Keyword(s):  
Neural Network ◽  
Feature Extraction ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Flow Meter ◽  
Two Phase

Numerical Simulation of the Grille-Type Gas Flow Meter in a Short Duct

2013 ◽  
Vol 807-809 ◽  
pp. 2477-2483
Author(s):  
Yong Gang Zhao ◽  
Bao Min Sun ◽  
Zhi Qiang Liu ◽  
Ding Hua Yang ◽  
Qing Liang Guan ◽  
...  
Keyword(s):  
Gas Flow ◽  
Dynamic Pressure ◽  
Gas Velocity ◽  
Flow Meter ◽  
Branch Duct ◽  
Large Pressure ◽  
Key Characteristics ◽  
Type Flow ◽  
Specific Position ◽  
Industrial Boiler

Based on Bernoulli law, a average flow meter for short duct is usually designed with a rectifying grille, a series of sectional distributed pressure points and a large pressure-averaging vessel. As rectification is one of the key characteristics of this method, the effect of grille on rectifying is numerically simulated. The predicted results show that the grille in the 800mm×500mm section is very effective on regulating the originally disordered flow in the wind box branch duct. The velocity distribution tends to be uniform when the arrayed pitch is decreased while the rectifying effect is not closely associated with the relative location of the grille. The grille thickness plays a determining role as the rectifying becomes gradually weakened when the thickness is over 200mm. When a 5×4 grille with a thickness of 200mm is mounted at 200mm from the main duct outlet horizontally in downstream duct of the main wind box, the averaged pressure of each subsection is in good linear relation with the average gas velocity in the branch duct. The linear relationship is well maintained when the static pressure is measured at specific position and the dynamic pressure point is installed with error of 4o. This indicates that the grille-type flow meter is very reliable on measuring average gas velocity in short ducts. The application of this method on a 200MW industrial boiler shows that it possess promising potentials on optimizing combustion and emission, which could bring admirable environmental, economic and social benefits.

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