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Keywords = compact micro-Coriolis mass-flow meter

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12 pages, 5028 KB  
Article
Compact Micro-Coriolis Mass-Flow Meter with Optical Readout
by Mahdieh Yariesbouei, Remco G. P. Sanders, Remco J. Wiegerink and Joost C. Lötters
Micromachines 2024, 15(1), 114; https://doi.org/10.3390/mi15010114 - 10 Jan 2024
Cited by 1 | Viewed by 2092
Abstract
This paper presents the first nickel-plated micro-Coriolis mass-flow sensor with integrated optical readout. The sensor consists of a freely suspended tube made of electroplated nickel with a total length of 60 mm, an inner diameter of 580 µm, and a wall thickness of [...] Read more.
This paper presents the first nickel-plated micro-Coriolis mass-flow sensor with integrated optical readout. The sensor consists of a freely suspended tube made of electroplated nickel with a total length of 60 mm, an inner diameter of 580 µm, and a wall thickness of approximately 8 µm. The U-shaped tube is actuated by Lorentz forces. An optical readout consisting of two LEDs and two phototransistors is used to detect the tube motion. Mass-flow measurements were performed at room temperature with water and isopropyl alcohol for flows up to 200 g/h and 100 g/h, respectively. The measured resonance frequencies were 1.67 kHz and 738 Hz for water and 1.70 kHz and 752 Hz for isopropyl alcohol for the twist and swing modes, respectively. The measured phase shift between the two readout signals shows a linear response to mass flow with very similar sensitivities for water and isopropyl alcohol of 0.41mdegg/h and 0.43 mdegg/h, respectively. Full article
(This article belongs to the Special Issue Feature Papers of Micromachines in Physics 2023)
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12 pages, 787 KB  
Article
Compact Mass Flow Meter Based on a Micro Coriolis Flow Sensor
by Wouter Sparreboom, Jan Van de Geest, Marcel Katerberg, Ferry Postma, Jeroen Haneveld, Jarno Groenesteijn, Theo Lammerink, Remco Wiegerink and Joost Lötters
Micromachines 2013, 4(1), 22-33; https://doi.org/10.3390/mi4010022 - 1 Mar 2013
Cited by 32 | Viewed by 13543
Abstract
In this paper we demonstrate a compact ready-to-use micro Coriolis mass flow meter. The full scale flow is 1 g/h (for water at a pressure drop < 1 bar). It has a zero stability of 2 mg/h and an accuracy of 0.5% reading [...] Read more.
In this paper we demonstrate a compact ready-to-use micro Coriolis mass flow meter. The full scale flow is 1 g/h (for water at a pressure drop < 1 bar). It has a zero stability of 2 mg/h and an accuracy of 0.5% reading for both liquids and gases. The temperature drift between 10 and 50 °C is below 1 mg/h/°C. The meter is robust, has standard fluidic connections and can be read out by means of a PC or laptop via USB. Its performance was tested for several common gases (hydrogen, helium, nitrogen, argon and air) and liquids (water and isopropanol). As in all Coriolis mass flow meters, the meter is also able to measure the actual density of the medium flowing through the tube. The sensitivity of the measured density is ~1 Hz.m3/kg. Full article
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