A differential pressure liquid flow sensor for flow regulation and dosing systems

In this paper we present a 3D printed flow meter based on venturri effect. Dimensions of the microchannels are 800 µm for wider and 400 µm for thinker channel. Application of different type of sensors was investigated: differential, absolute and digital barometer. Results of measurement of differential pressure and calculation of liquid flow are shown. Presented microfluidics device can be also easy adapted for modular systems. Presented flow meter is the first integration of commercial available sensors and 3D printed microfluidics structure in a single chip.

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Stick-to-Analyze Zeta Potential Measurement Chip with Integrated Electroosmotic Micropump and Liquid Flow Sensor

2019 IEEE 32nd International Conference on Micro Electro Mechanical Systems (MEMS) ◽

10.1109/memsys.2019.8870895 ◽

2019 ◽

Cited By ~ 1

Author(s):

Yuki Okamoto ◽

Koji Fujimoto ◽

Hiroyuki Ryoson ◽

Takayuki Ohba ◽

Yoshio Mita

Keyword(s):

Zeta Potential ◽

Liquid Flow ◽

Flow Sensor ◽

Potential Measurement ◽

Zeta Potential Measurement

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Wet Gas Flow Metering Based on Differential Pressure and BSS Techniques

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.383-390.4922 ◽

2011 ◽

Vol 383-390 ◽

pp. 4922-4927

Author(s):

Peng Xia Xu ◽

Yan Feng Geng

Keyword(s):

Flow Rate ◽

Liquid Flow ◽

Gas Flow ◽

Two Phase Flow ◽

Liquid Flow Rate ◽

Differential Pressure ◽

Phase Flow ◽

Two Phase ◽

Flow Metering ◽

Wet Gas

Wet gas flow is a typical two-phase flow with low liquid fractions. As differential pressure signal contains rich information of flow parameters in two-phase flow metering, a new method is proposed for wet gas flow metering based on differential pressure (DP) and blind source separation (BSS) techniques. DP signals are from a couple of slotted orifices and the BSS method is based on time-frequency analysis. A good relationship between the liquid flow rate and the characteristic quantity of the separated signal is established, and a differential pressure correlation for slotted orifice is applied to calculate the gas flow rate. The calculation results are good with 90% relative errors less than ±10%. The results also show that BSS is an effective method to extract liquid flow rate from DP signals of wet gas flow, and to analysis different interactions among the total DP readings.

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Monolithic flow sensor for measuring millilitre per minute liquid flow

Sensors and Actuators A Physical ◽

10.1016/0924-4247(92)80160-5 ◽

1992 ◽

Vol 33 (3) ◽

pp. 143-153 ◽

Cited By ~ 45

Author(s):

Canqian Yang ◽

Henrik Søeberg

Keyword(s):

Liquid Flow ◽

Flow Sensor

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Experimental Investigation of Static Pressure Characteristics of FBG Differential Pressure Flow Sensor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.336-338.134 ◽

2013 ◽

Vol 336-338 ◽

pp. 134-138 ◽

Cited By ~ 1

Author(s):

Chun Tong Liu ◽

Zhen Xin He ◽

Yang Zhang ◽

Hong Cai Li

Keyword(s):

Static Pressure ◽

Sensitivity Coefficient ◽

Differential Pressure ◽

Flow Sensor ◽

Experimental Result ◽

Hydraulic Pressure ◽

Hysteresis Phenomenon ◽

Pressure Flow ◽

Pressure Calibrator ◽

Pressure Characteristics

On the basis of FBG (Fiber Bragg Grating) sensor principle analysis, a differential pressure flow sensor using FBG has been designed. The static pressure characteristics of the sensor were experimental studied by the hydraulic pressure calibrator and Q8384 spectrometer, and the experimental result errors were analyzed. Experimental results show that, the sensitivity coefficient of FBG is 3 pm/KPa in the differential pressure range of 0~0.35 MPa. The changes of Bragg wavelength with the pressure changes showing a good linear relationship and repetitive, and the hysteresis phenomenon is minor, which can be used for flow measurement of hydraulic system in special areas.

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