نتایج جستجو برای: flowmeter

تعداد نتایج: 1129  

2009
Lv Xiaozhi Guo Wencheng

Intelligent magnetic flowmeter is one of main developing trend of magnetic flowmeter. This paper describes in detail the software and hardware designs of the intelligent magnetic flowmeter using MSP430 single chip computer, gives the realizing communication method based on HART protocol, and proposes the software and hardware technical stratagems for low power consumption design of magnetic flo...

2014
Jiang Xingfang

There are many problems in the traditional electromagnetic flowmeter. The problems involve three aspects. The first one is that the measurement precision is low. The second one is that the measurement range is narrow. The third one is that the test results are susceptible to interference. For the problems a new electromagnetic flowmeter controlled by single-chip microcomputer has been proposed....

Journal: :Ground water 2009
Tom Clemo Warren Barrash Edward C Reboulet Timothy C Johnson Carsten Leven

This paper describes a combined field, laboratory, and numerical study of electromagnetic borehole flowmeter measurements acquired without the use of a packer or skirt to block bypass flow around the flowmeter. The most significant finding is that inflow through the wellbore screen changes the ratio of flow through the flowmeter to wellbore flow. Experiments reveal up to a factor of two differe...

2015
Igor Korobiichuk Olena Bezvesilna Andri Ilchenko Valentina Shadura Michal Nowicki Roman Szewczyk

A thermo-anemometric flowmeter design and the principles of its work are presented in the article. A mathematical model of the temperature field in a stream of biofuel is proposed. This model allows one to determine the fuel consumption with high accuracy. Numerical modeling of the heater heat balance in the fuel flow of a thermo-anemometric flowmeter is conducted and the results are analyzed. ...

Journal: :Flow Measurement and Instrumentation 2019

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1987

Journal: :TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 1975

2004
Richard Paton

Calibration is defined as follows: ‘The set of operations that establish, under specified conditions, the relationship between values of quantities indicated by a measuring instrument or measuring system and the corresponding values realized by standards.’ It is important to recognize at the outset the definition of a ‘calibration’ and to note that the ‘comparison’ applies only to the condition...

Open channel junction is one of the most common hydraulic structures that are used in various practical situations such as sewer, drainage, and flood control systems. Knowing the fluid flow behavior, is one of the most important topics in designing the efficient open channel junctions. The complexity and deviation of flow in the junction’s zone disrupts the proper functioning of the flowmeter d...

Journal: :Electronics 2023

Permanent magnet metal flowmeters are implemented to monitor the flow of liquid coolant in a nuclear reactor, whose measurement accuracy plays significant role ensure safety and normal operation reactor. According theoretical analysis permanent flowmeter, several factors such as temperature, nonlinear degree, zero potential will affect measuring flow. However, for heavy-caliber influence magnet...

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