A catheter-type flow sensor for measurement of aspirated- and inspired-air characteristics in the bronchial region

2009 ◽  
Vol 19 (10) ◽  
pp. 105027 ◽  
Author(s):  
M Shikida ◽  
J Naito ◽  
T Yokota ◽  
T Kawabe ◽  
Y Hayashi ◽  
...  
Keyword(s):  
Author(s):  
Reni Eka Putri ◽  
Azmi Yahya ◽  
Nor Maria Adam ◽  
Samsuzana Abd Aziz

A complete calibration test stand was constructed and instrumented to examine the effect of varying pitch and roll positions on the measurement errors of a microwave solid type flow sensor. Results indicated that measurement errors ranging from 2.50% to 6.82% and 1.80% to 8.86% were obtained by the changing of chute pitch (descending and ascending) and roll angle positions from 1.5° to 4.5°, respectively. Greater measurement errors were found at the low screw auger conveyor speed range. However, the magnitude of errors is within the acceptable margin for any typical wet paddy land topography.


2014 ◽  
Vol 2014.89 (0) ◽  
pp. _10-7_
Author(s):  
Ryosuke MOTOYAMA ◽  
Hiroyuki IYOTA ◽  
Satoshi OGURA ◽  
Nobuya NISHIMURA

Author(s):  
Gwan-Hyung Kim ◽  
Hea-Sung Jung ◽  
In-Ho Jung

<p>The present study studied structure analysis and sensor modules for explosion-proof thermal type flow sensors that can withstand the poor surroundings of vessel engines and power plants and can be installed in gas lines. The structure analysis evaluated the integrity of the structures of the explosion-proof thermal type flow sensors with finite element analysis, and with regard to the operation of the sensor modules, those sensor modules that can detect environments where vibrations occur or where there are flows of high pressure gases or fluids were researched and developed. The explosion-proof thermal type flow sensor module consists of a sensing part, an adjustment part, and an output part, and a noise prevention circuit was added to secure the stability of the measurement signals. The flow sensor developed with the present study is a sensor module capable of measuring flows in domestic gas engines and gas piping and it is presented as a reliable sensor module because it is strong against vibrations and has excellent explosion-proof performance.</p>


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