mini CORI-FLOW M12-M14
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Catalog excerpts

mini CORI-FLOW M12-M14 - 1

mini CORI-FLOW Compact Coriolis Mass Flow Meters & Controllers for

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mini CORI-FLOW M12-M14 - 2

Facts about Coriolis Flow Measurement and Control Mass Flow Meters Mass Flow Controllers Liquid Dosing Systems Technical specifications Model number identification

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Facts about Coriolis Flow Measurement and Control Coriolis principle of operation In 1835 Gaspard-Gustave Coriolis, a French scientist, described the effect that moving objects deflect from a straight path when they are viewed from a rotating frame of reference. In the nineteen seventies the “Coriolis effect” started to find applications in mass flow meters: a fluid flows through a vibrating tube and causes changes in frequency, phase shift or amplitude, proportional to the mass flow through the tube, giving the density of the fluid as secondary output. The mini CORI-FLOW solution TM...

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mini CORI-FLOW™ Mass Flow Meters General mini CORI-FLOW series by Bronkhorst® are precise and compact Mass Flow Meters and Controllers, based on the Coriolis measuring principle. Designed to cover the needs of the low flow market, there are 3 models to overlap flow ranges from 5 g/h up to 30 kg/h (full scale values), each offering “multi-range” functionality: factory calibrated ranges can be rescaled by the user, maintaining the original accuracy specs. As a result of this, customers are able to reduce the variety of instruments and thus reduce the cost of ownership. The instruments are...

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mini CORI-FLOW M12-M14 - 5

Application on liquids mini CORI-FLOW can be applied for most liquid types. The mass flow meters are fully metal sealed, controllers have a high p erformance elastomeric valve seat, made of Kalrez®. TM High accuracy Coriolis flow meters are unmatched in accuracy. When applied for liquids, the mass flow accuracy is better than ±0,2% Rd. The trumpet graph below illustrates the total mass flow accuracy of an M13 Mass Flow Meter used on liquid. Total accuracy M13 on liquid (±0,2% Rd + ±0,2 g/h ZS) mini CORI-FLOW Mass Flow Meter with local readout module, TM Pressure drop sensor for water (at...

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mini CORI-FLOW™ Mass Flow Meters Application on gases Dimensions Mass Flow Meter In comparison with thermal mass flow devices, the Coriolis meas ring principle offers the following advantages: u • no conversion factors (if scaled in units of weight) • possibility to measure unknown fluids or variable mixtures • can measure (super-) critical gases • superior accuracy and response time For gas flow applications, the mass flow accuracy is better than ±0,5% Rd. The trumpet graph below illustrates the total mass flow accuracy of an M13 Mass Flow Meter used on gas. When engineering your process...

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Approx. maximum gas flow rates as function of various inlet pressures (P2 = 1 bara and T = 20°C) M14 Mass Flow Meter Gas Air/N2 Ar CO2 CO C2H6 He H2 CH4 N2O O2 g/h ln/min g/h ln/min g/h ln/min g/h ln/min g/h ln/min g/h ln/min g/h ln/min g/h ln/min g/h ln/min g/h ln/min P1 (bara) 2 880 11 1040 10 1090 9 865 11 900 11 325 30 230 43 660 15 1090 9 925 11 3 1400 20 1600 15 1700 14 1380 20 1400 17 500 45 370 70 1050 25 1750 15 1480 18 5 2400 30 2800 26 2960 25 2350 31 2450 30 890 83 630 120 1780 41 2960 25 2510 30 10 4750 63 5700 53 6000 50 4750 63 4950 61 1800 168 1280 240 3600 83 6000 50 5100...

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mini CORI-FLOW™ Mass Flow Controllers General The pc-board of a mini CORI-FLOW Mass Flow device features i ntegrated, adaptable PID control for fast and smooth control of any electronically driven control valve. Depending on the a pplication this could be an integrated direct acting valve or a separately mounted valve for special tasks, e.g. a pressure a ctuated control valve. Integrated control valves for liquid a pplications have a purge connection on top of the sleeve that enables easy elimination of air or gas when starting up the system. For liquid dosing Bronkhorst® offers an...

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mini CORI-FLOW M12-M14 - 9

mini CORI-FLOW™ Mass Flow Controllers Pressure drop Mass Flow Controllers Dimensions Mass Flow Controller As a rule of thumb the pressure difference (ΔP) across the control valve should be at least 50% of the total ΔP across the system for liquid applications, for gases preferably even higher (approx 75%). Close-coupled control valves For control applications normally an MFC with integrated control valve will be preferred, because it is the most compact and e conomical solution. Sometimes, however, a separate control valve could be more practical or offer technical advantages. This could be...

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mini CORI-FLOW M12-M14 - 10

mini CORI-FLOW™ Liquid Dosing Systems, using flow meter controlled pumps An alternative way of control In some applications it is not possible or not recommended to use a control valve, for instance when a vessel with liquid cannot be pressurised. As an alternative, Bronkhorst® can offer virtually pulse-free gear pumps, HPLC or diaphragm pumps, close- coupled to the Coriolis flowmeter. Liquid dosing system A mini CORI-FLOW liquid dosing system consists of a Coriolis flow meter, a gear pump and interconnecting material. Furthermore Bronkhorst® will take care of electrical and mechanical...

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mini CORI-FLOW™ Applications Gas or liquid precursor delivery In deposition processes various precursor fluids must be a ccurately controlled, either in gas phase or as a liquid. The high precision Mass Flow Controllers of the mini CORI-FLOW series are particularly suitable for these demanding applications. Thanks to the “multi-range” feature, Original Equipment Manufacturers (OEM customers) are able to drastically reduce the variety of spare instruments and thus the cost of ownership, since the i nstruments are easy to re-range. TM mini CORI-FLOWTM for additive dosage Many applications ask...

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mini CORI-FLOW™ Applications Supercritical gas measurement and control Fluids like carbon dioxide (CO2) are difficult to measure when they move towards the inter-phase stage between being a liquid o and a gas. For example, for CO2 this ccurs at temperatures >31,1°C and pressures higher than approx. 73,8 bara. Under these conditions, physical properties like density (ρ) and heat capacity (Cp) change very rapidly as a result of pressure or temperature variations. This makes an accurate mass flow measurement, based on the thermal principle, very ifficult. d in liquid phase or indeed somewhere...

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