Publication

Integrated LTCC micro-fluidic modules - an SMT flow sensor

Peter Ryser, Thomas Maeder, Yannick Sébastien Fournier, Raphael Willigens
2005
Conference Papers

Abstract

This paper presents a thermal flow sensor based on the calorimetric principle realized by using low temperature co-fired ceramic (LTCC) technology, where the tapes and flow channel have been structured by laser machining. A standard configuration of a calorimetric sensor consists of a heater placed above the flow channel and temperature sensitive elements arranged symmetrically downstream and upstream. The temperature difference between temperature sensitive elements (at the upstream and downstream position) acts as a measure of flow velocity. The structure and the characteristic of the sensor are demonstrated.

Official source

https://infoscience.epfl.ch/entities/publication/b2c29f04-79db-49e5-808c-db5127eb6655

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Peter Ryser, Thomas Maeder, Yannick Sébastien Fournier, Raphael Willigens
2005
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/b2c29f04-79db-49e5-808c-db5127eb6655

About this result

Related concepts (21)

Laminar flow

In fluid dynamics, laminar flow (ˈlæmənər) is characterized by fluid particles following smooth paths in layers, with each layer moving smoothly past the adjacent layers with little or no mixing. At low velocities, the fluid tends to flow without lateral mixing, and adjacent layers slide past one another like playing cards. There are no cross-currents perpendicular to the direction of flow, nor eddies or swirls of fluids. In laminar flow, the motion of the particles of the fluid is very orderly with particles close to a solid surface moving in straight lines parallel to that surface.

Volumetric flow rate

In physics and engineering, in particular fluid dynamics, the volumetric flow rate (also known as volume flow rate, or volume velocity) is the volume of fluid which passes per unit time; usually it is represented by the symbol Q (sometimes ). It contrasts with mass flow rate, which is the other main type of fluid flow rate. In most contexts a mention of rate of fluid flow is likely to refer to the volumetric rate. In hydrometry, the volumetric flow rate is known as discharge.

Temperature

Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have relied on various reference points and thermometric substances for definition. The most common scales are the Celsius scale with the unit symbol °C (formerly called centigrade), the Fahrenheit scale (°F), and the Kelvin scale (K), the latter being used predominantly for scientific purposes.

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