Novel integrated coaxial line to cylindrical waveguide directive couplers in pipelines for process monitoring applications

Penirschke, Andreas; Freese, J.; Biebel, J.; Allenberg, B.; Jakoby, Rolf

doi:10.1109/mwsym.2005.1516892

Cited by 12 publications

(23 citation statements)

References 3 publications

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“…Reference measurements where carried out with a MSP (Microstrip Patch Sensor) [3], [11] that uses the spatial filtering velocimetry principle to detect the particulates velocity. Up to now only measurements with a constant feedrate of 1100 g/h where carried out with a velocity from the particles of 15 m/s.…”

Section: Measurement Resultsmentioning

confidence: 99%

“…Compared to microwave sensors [3], [7] that use frequencies in the order of the pipelines cutoff frequency the CRLH-TL sensor principle can be designed for lower frequencies. There is always a trade-off between the maximum possible sensor length, the operation frequency, the sensitivity and the costs of such a system.…”

Section: Discussionmentioning

confidence: 99%

“…Drawbacks of these techniques are moderate detection accuracy and relatively high costs of such radar systems. Other microwave systems use TM-and TEmodes inside the metallic pipeline to detect the dielectric load within the tube [3], [7]. These techniques offer high detection accuracies for the material density but, up to now, no velocity information.…”

Section: Introductionmentioning

confidence: 99%

“…This paper investigates an application of this concept for a compact mass flow sensor with increased sensitivity compared to a conventional microwave mass flow sensor. A prototype of a particulate mass flow sensor for a pneumatic conveying system [3], [4] was built up and measurements where done to proof the concept.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microwave Mass Flow Meter for Industrial Applications based on a Lefthanded Transmission Line Resonator

Puentes

Penirschke

Schüßler

et al. 2009

2009 German Microwave Conference

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show abstract

Section: Measurement Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microwave Mass Flow Meter for Industrial Applications based on a Lefthanded Transmission Line Resonator

Puentes

Penirschke

Schüßler

et al. 2009

2009 German Microwave Conference

View full text Add to dashboard Cite

show abstract

“…Drawbacks of these techniques are moderate detection accuracy and relatively high costs of such radar systems. Other microwave systems uses TM-and TE-modes inside the metallic pipeline to detect the dielectric load within the tube [3], [7]. These techniques offer high detection accuracies for the material concentration but, up to now, no velocity information.…”

Section: Introductionmentioning

confidence: 99%

Microwave mass flow meter for pneumatic conveyed particulate solids

Penirschke

Puentes

Maune

et al. 2009

2009 IEEE Intrumentation and Measurement Technology Conference

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A particulates mass flow meter has been developed using a composite right/left-handed transmission line resonator. The presented sensor principle promises the possibility to design precise particulate solids mass flow meter with moderate costs. The Spatial Filter Velocimetry is applied to the sensor in order to detect the velocity information. The simultaneous detection of the velocity and the solids/air concentration from a single measurement, ensure a true mass flow detector. The detector offers good prospects for industrial applications with various scenarios of gas/solids, gas/liquid and liquid/solids flows.Index Terms-Composite right/left-handed metamaterial, permittivity measurement, pneumatic conveying, spatial filtering velocimetry, transducers, mass flow meters.

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Detection of solid contaminants in gas flows using microwave resonant probes

Akhter

Taha

Rahman

et al. 2020

Meas. Sci. Technol.

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The presence of undesirable solid contaminants can have adverse effects on the integrity of gas pipelines. One of the most common contaminants in such pipelines is black powder. Developing predictive maintenance protocols, including online quality monitoring, is imperative to ensure the on-spec supply of gas to customers and to avoid severe consequences such as pipeline blockage. In this paper, a microwave sensing system that utilizes resonant probes for the detection and monitoring of solid contaminants, is presented. The proposed probe is essentially a conventional circular waveguide with a resonant iris structure attached to the aperture. The concentration of solid contaminants in gas flows is assessed by analyzing the scattering parameters of transmitting/receiving probes at a resonant frequency, which are coupled non-intrusively to the pipeline. 3D electromagnetic simulations are performed for sensitivity analysis of the proposed sensing system. Furthermore, the detection and evaluation of solid contaminants are experimentally validated using air/sand flow in a 51 mm inner diameter pipeline. The efficacy of the proposed system is demonstrated following the successful detection of solid contaminants in the dual-phase flow. Additionally, it is also illustrated that inclusion of a resonating iris structure in the aperture of the circular waveguide results in enhanced sensitivity when compared to a non-resonant counterpart.

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Novel integrated coaxial line to cylindrical waveguide directive couplers in pipelines for process monitoring applications

Cited by 12 publications

References 3 publications

Microwave Mass Flow Meter for Industrial Applications based on a Lefthanded Transmission Line Resonator

Microwave Mass Flow Meter for Industrial Applications based on a Lefthanded Transmission Line Resonator

Microwave mass flow meter for pneumatic conveyed particulate solids

Detection of solid contaminants in gas flows using microwave resonant probes

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