scholarly journals Flow Rate Control by Means of Flow Meter and PLC Controller

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6153
Author(s):  
Sylwia Włodarczak ◽  
Marek Ochowiak ◽  
Michał Doligalski ◽  
Bartosz Kwapisz ◽  
Andżelika Krupińska ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Flow Rate ◽  
Programmable Logic Controller ◽  
Flow Sensor ◽  
Programmable Logic ◽  
Flow Meter ◽  
Polyamide 12 ◽  
New Construction ◽  
Flow Rate Control ◽  
Accurate Reading

This paper presents a design of a flow meter based on a programmable logic controller (PLC). The new construction of a flow meter controlled by PLC increases the possibilities for the control and automation of fluid flow. Additionally, the didactic potential of the use of simple automation in the form of a programmable logic controller was considered. A device enabling the measurement of fluid flow rate based on a PLC controller was designed, constructed, and tested. The choice of device was the Gems Sensors FT-210 series turbine flow sensor, which is characterized by low purchase and maintenance costs. The properties and the chemical resistance of polyamide-12, the material the sensor is made of, make it possible to test the flow of various types of fluids. As part of the work, an algorithm and a program controlling the device was developed based on the APB Soft software, enabling the accurate reading of the number of impulses sent by the turbine flow sensor. The results of the designed flow meter were compared with the results obtained for the Krohne VA-40 high accuracy rotameter.

Vision-Based Real-Time Microflow-Rate Control System for Cell Analysis

2016 ◽  
Vol 28 (6) ◽  
pp. 854-861 ◽  
Author(s):  
Tadayoshi Aoyama ◽  
◽  
Amalka De Zoysa ◽  
Qingyi Gu ◽  
Takeshi Takaki ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Control System ◽  
Real Time ◽  
Flow Rate ◽  
Rate Control ◽  
Microfluidic Devices ◽  
Cell Analysis ◽  
Time Flow ◽  
On Chip ◽  
Flow Rate Control

[abstFig src='/00280006/09.jpg' width='300' text='Snapshots of particle sorting experiment using our system' ] On-chip cell analysis is an important issue for microtechnology research, and microfluidic devices are frequently used in on-chip cell analysis systems. One approach to controlling the fluid flow in microfluidic devices for cell analysis is to use a suitable pumps. However, it is difficult to control the actual flow-rate in a microfluidic device because of the difficulty in placing flow-rate sensors in the device. In this study, we developed a real-time flow-rate control system that uses syringe pumps and high-speed vision to measure the actual fluid flow in microfluidic devices. The developed flow-rate control system was verified through experiments on microparticle velocity control and microparticle sorting.

Comparison of Gingival Health and Gingival Crevicular Fluid Flow in Children With and Without Diabetes

1977 ◽  
Vol 56 (2) ◽  
pp. 108-111 ◽  
Author(s):  
M.L. Ringelberg ◽  
D.O. Dixon ◽  
A.O. Francis ◽  
R.W. Plummer
Keyword(s):  
Fluid Flow ◽  
Flow Rate ◽  
Gingival Crevicular Fluid ◽  
Gingival Inflammation ◽  
Flow Meter ◽  
Clinical Scores ◽  
Gingival Health ◽  
Crevicular Fluid

A gingival crevicular fluid (GCF) flow meter was used to measure the GCF flow rate in 56 children with diabetes and 41 children without diabetes. The GCF readings were compared with clinical scores of gingival disease for the same teeth. The children with diabetes had significantly more gingival inflammation than the children without diabetes.

Indirect measurement of the flow rate based upon a solution of an inverse coefficient problem

2018 ◽  
Vol 28 (1) ◽  
pp. 92-102 ◽  
Author(s):  
Kazimierz Rup ◽  
Lukasz Malinowski ◽  
Piotr Sarna
Keyword(s):  
Fluid Flow ◽  
Flow Rate ◽  
Indirect Method ◽  
Measuring Method ◽  
High Accuracy ◽  
Fluid Flow Rate ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Flow Meter ◽  
Content Type

Purpose The purpose of this paper is to extend the possibilities of using the earlier developed indirect method of fluid flow rate measurement in circular pipes to the square-section channels with elbows installed. Design/methodology/approach The idea of the method is based on selecting such a value of the Reynolds number assumed as a coefficient in fluid flow equations, which fulfills with set accuracy the condition of equality between the measured and computed pressure difference at the end points of the secant of the elbow arch. The numerical calculus takes into consideration the exact geometry of the flow space and the measured temperature of the fluid, on the basis of which its thermo–physical properties are determined. To implement the proposed method in practice, a special test stand was built. The numerical computations were carried out using the software package FLUENT. Findings The results of calculations were compared with corresponding results of measurements achieved on the stand, as well as those found in the literature. The comparative analysis of the obtained numerical and experimental results shows a high grade of consistence. Practical implications The discussed elbow flow meter, implementing the extended indirect measuring method, can be applied to determine the flow rate of gases, as well as liquids and suspensions. Originality/value The indirect method used to measure the volumetric flow rate of the fluid is characterized by high accuracy and repeatability. The high accuracy is possible because of a very realistic mathematical model of the complex flow in the curved duct. The indirect method eliminates the necessity of frequent calibration of the flow meter. The discussed extended indirect measuring method can be applied to determine the flow rate of gases as well as liquids and suspensions. The fluid flow rate measurement based on the method considered in this paper can be particularly useful in newly designed as well as already operated ducts.

Desain Media Pembelajaran Sistem Kontrol Elektropneumatik Berbasis Programmable Logic Controller

2018 ◽  
Vol 3 (1) ◽  
pp. 42
Author(s):  
Wachid Yahya
Keyword(s):  
Research And Development ◽  
Programmable Logic Controller ◽  
Programmable Logic

Sistem kontrol elektropneumatik telah banyak digunakan dalam menunjang pekerjaan di dunia industri,perkembangan teknologi ini harus segera direspons oleh dosen pada perguruan tinggi vokasi yang memiliki peran sebagai pencetak calon tenaga ahli siap kerjauntuk mengembangkan media pembelajaran. Penelitian ini bertujuan untuk: (1) menguji kelayakan desain media pembelajaran sistem kontrol elektropneumatik berbasis <em>programmable logic controller</em>, (2) mendeskripsikan respons mahasiswa dalam menggunakan media pembelajaran sistem kontrol elektropneumatik berbasis <em>programmable logic controller</em> dalam kegiatan pembelajaran. Metode yang digunakan pada penelitian ini yaitu menggunakan metode penelitian dan pengembangan <em>Research and Development</em> (R&amp;D) dengan melalui beberapa tahap, yaitu tahap analisis potensi dan masalah, pengumpulan data, desain produk, validasi desain, revisi desain, uji coba produk, revisi produk, dan uji coba pemakaian. Pengumpulan data dilakukan dengan menggunakan lembar validasi ahli yang diberikan oleh 3 orang ahli dan angket respons yang diperoleh dari mahasiswa. Kesimpulan yang diperoleh dari penelitian ini yaitu: (1) desain pembelajaran sistem kontrol elektropneumatik berbasis <em>programmable logic controller</em> mendapatkan nilai validasi yang diberikan oleh para ahli dengan rata-rata nilai 3,51 sehingga menunjukkan bahwa media pembelajaran dalam kategori baik dan layak untuk digunakan dalam proses pembelajaran, (2) respons mahasiswa dalam menggunakan media pembelajaran sistem kontrol elektropneumatik berbasis <em>programmable logic controller </em>dalam kegiatan pembelajaran diperoleh nilai persentase 84,34%mahasiswa memberikan respons menarik, dengan demikian hasil respons mahasiswa termasuk dalam kategori baik.

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