A 2-Port, Space-Saving, Maintenance-Friendly Pneumatic Probe for Velocity Measurements

• Autorzy: Olczyk A. , Magiera R. , Kabalyk K.

Identyfikatory

DOI

10.24425/118168

• Języki publikacji: EN

Abstrakty

EN

This paper presents the concept, design and experimental results of tests, in laboratory conditions, of a 2-port, space-saving pneumatic probe. The main features of the probe are a result of restrictions imposed by the functioning environment: a limited space for probe installation, the possibility of processing only two output signals and requirements for simplicity and reliability of the probe. A cylindrical shape of the probe tip is proposed as a general concept, similar to the classic, cylindrical, 3-port probe. The main difference arises in using only two pressure signals: one from the overpressure zone on the front side of the cylinder and another, from the underpressure zone on the back side. After performing an appropriate calibration procedure, it is possible to measure the flow velocity and correct the pressure difference obtained by means of a velocity coefficient k_v. This paper also presents an analysis of the k_v coefficient uncertainty to evaluate the quality of measurements.

Słowa kluczowe

EN

pneumatic probes; probe calibration; uncertainty of measurements; velocity measurements

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2018
• Tom: Vol. 25, nr 1
• Strony: 171--185
• Opis fizyczny: Bibliogr. 19 poz., rys., tab., wykr., wzory

Twórcy

autor

Olczyk A.

• Lodz University of Technology, Faculty of Mechanical Engineering, Institute of Turbomachinery, Wólczańska 219/223, 90-924 Łódź, Poland

autor

Magiera R.

• Lodz University of Technology, Faculty of Mechanical Engineering, Institute of Turbomachinery, Wólczańska 219/223, 90-924 Łódź, Poland

autor

Kabalyk K.

• Lodz University of Technology, Faculty of Mechanical Engineering, Institute of Turbomachinery, Wólczańska 219/223, 90-924 Łódź, Poland

Bibliografia

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• [3] Diaz, D.L. (2003). Experimental Calibration of Three-Hole Pressure Probes with Different Head Geometries. Diploma Thesis, Vienna University of Technology.
• [4] ISO (2008). ISO 3966:2008 Measurement of fluid flow in closed conduits - Velocity area method using Pitot static tubes
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• [7] Olczyk, A., Kantyka, K., Adamiec, A. (2016). Evaluation of the Applicability of S-type Probes in Flow Velocity Measurements. CMP Turbomachinery, 150, 37-50.
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• [13] Willinger, R. (2006). A Three-Hole Pressure Probe Exposed to Wall Proximity Effects: Experimental, Numerical and Analytical Investigation. Conference on Modelling Fluid Flow (CMFF’06), Budapest; 6-9 Sep., 2006, Conference Proceedings, I.
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• [15] Evaluation of measurement data - Guide to the expression of uncertainty in measurement (GUM). Joint Committee for Guides in Metrology 100:2008 (ISO/IEC Guide 98-3:2008).
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• [17] http://www.tsi.com/uploadedFiles/Product_Information/Literature/Spec_Sheets/9565-VelociCalc_US-5001361-specsheet.pdf
• [18] http://www.flowkinetics.com/Kiel_documentation.pdf
• [19] http://www.unitedsensorcorp.com/pitot-properties.html

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).