![]() ![]() Mass flow rate (kg/h) By combining the density meter FD-5110 and the FZ series, the FP series can calculate the mass flow rate in real time. The FZ series converts the measured density data to the volumetric flow rate. Lien V, Vollmer F (2007) Microfluidic flow rate detection based on integrated optical fiber cantilever. Volumetric flow rate (L/h) The FP series enables to measure directly the volumetric flow rate. Katayama K, Uchimura H, Sakakibara H, Kikutani Y, Kitamori T (2007) In situ microfluidic flow rate measurement based on near-field heterodyne grating method. Lee GB, Kuo TY, Wu WY (2002) A novel micromachined flow sensor using periodic flapping motion of a planar jet impinging on a V-shaped plate. If inertial forces (flow rate) are much bigger, and Reynolds number is higher than critical, Re > 2320, fluid flow is turbulent, and if viscous forces are big enough in comparison to. Lab Chip 5(12):1344–1347Ĭzaplewski DA, Ilic BR, Zalalutdinov M, Olbricht WL, Zehnder AT, Craighead HG, Michalske TA (2004) A micromechanical flow sensor for microfluidic applications. Reynolds number named after Osborne Reynolds (1842 1912), gives the relation between inertial and viscous forces of fluid flow. Wu J, Ye J (2005) Micro flow sensor based on two closely spaced amperometric sensors. Lab Chip 4(1):7–10Īmatore C, Belotti M, Chen Y, Roy E, Sella C, Thouin L (2004) Using electrochemical coupling between parallel microbands for in situ monitoring of flow rates in microfluidic channels. Meas Sci Technol 14(8):1321–1327Ĭollins J, Lee AP (2004) Microfluidic flow transducer based on the measurement of electrical admittance. Analyst 128(6):543–546Īyliffe HE, Rabbitt RD (2003) An electric impedance based microelectromechanical system flow sensor for ionic solutions. Nakagama T, Maeda T, Uchiyama K, Hobo T (2003) Monitoring nano-flow rate of water by atomic emission detection using helium radio-frequency plasma. Markov DA, Dotson S, Wood S, Bornhop DJ (2004) Noninvasive fluid flow measurements in microfluidic channels with backscatter interferometry. Wu JA, Sansen W (2002) Electrochemical time of flight flow sensor. Check this article to learn more about mass flow and calculations.Scholer L, Lange B, Seibel K, Schafer H, Walder M, Friedrich N, Ehrhardt D, Schonfeld F, Zech G, Bohm M (2005) Monolithically integrated micro flow sensor for lab-on-chip applications. Gas measurement units are calculated in standard cubic meters per hour ( m3n/hr) or standard cubic feet per minute ( SCFM). The mass of a gas does not vary with changes in temperature and pressure, the weight remains the same. re the shaded cylinder of fluid flows past point P in a uniform pipe in time t. ![]() This mass is represented by the number of molecules in a substance. Figure 12.1.1: Flow rate is the volume of fluid per unit time flowing past a point through the area A. Mass flow is the measure of a mass moving per unit time. Therefore, when measuring volumetric flow, one must take into account the gas temperature and gas pressure. When pressure increases, the volume will decrease. When temperature is raised, the space occupied by the volume will increase. When the volume is a gas, this will expand or shrink with differences in temperature and/or pressure. The volume is a substance occupying a three-dimensional space. Common units for volumetric flow are m3/hr, m3/min, CFM or ACFM. Volumetric flow, also referred to as actual flow, is a volume of medium moving per unit time.
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