Non-Intrusive Microwave Mass Flow Meter Based on Two-dimensional Lefthanded Transmission Lines

作者：Penirschke Andreas^*; Angelovski Aleksandar; Jakoby Rolf

来源：Technisches Messen, 2012, 79(3): 143-151.

DOI：10.1524/teme.2012.0174

• Composite right-/lefthanded metamaterial
• permittivity measurement
• pneumatic conveying
• spatial filtering velocimetry
• mass flow meters

This paper presents an application of a Composite Right/LeftHanded Transmission Line resonator (CRLH-TL) for a compact mass flow detector with increased sensitivity compared to a conventional microwave mass flow detector. In this concept, series capacitors and shunt inductors are used to synthesize a medium with simultaneously negative permeability and permittivity - the so called metamaterial. The simultaneous detection of the velocity and the solids/air concentration from a single measurement ensures a true mass flow detector. The arrangement of two CRLH-TL resonators to a helix shape opens up the possibility to detect the cross-sectional flow distribution of the material fed thereby increasing the accuracy of the detector. A prototype was realized and tested in a dedicated measurement setup to prove the concept. The application areas of this sensor are gas/solids, gas/liquid and liquid/solids flows in industrial monitoring applications.

• 出版日期2012