Digital Liquid Flow Meters-Controllers L10/L20

> IntroductionBronkhorst High-Tech B.V., the European market leader in thermal Mass Flow Meters/Controllers and Electronic Pressure Controllers, has more than 30 years experience in designing and manufac turing precise and reliable measurement and control devices. With a wide range of instruments, Bronkhorst High-Tech offers innovative solutions for many different applications in many different markets. The instruments are made to customers’ specification, in various styles, suitable for use in laboratory, industrial environment, hazardous areas, semiconductor processing or analytical equipment.> LIQUI-FLOWTM series L10 / L20Bronkhorst High-Tech B.V. has been the pioneer in the field of micro to low flow liquid metering instruments based on a thermal measuring principle. The digital LIQUI-FLOWTM Mass Flow Meter was designed to cover the range between 5 and 1000 g/h (Full Scale) in a compact instrument with a fast response. The Flow Meter is basically a stainless steel tube without any moving parts or built-in obstructions. The heater/sensor assembly is arranged around the tube and, by following the anemometric principle: a constant difference in temperature (?T) is created and the energy required to maintain the ?T is dependent of the mass flow rate. Due to the benefits of the unique patented sensor, the fluid will be warmed to a maximum of 5°C, thereby making the L10/L20 series suitable for fluids with low boiling points.> Liquid flow controlFlow control is achieved by integrating a control valve onto the body of the Liquid Flow Meter, or by mounting it as a separate component (in IP65 configuration). This control valve has a purge connection on top of the sleeve that enables easy elimination of air or gas when starting up the system. The electronic control function forms part of the normal circuitry in the liquid flow meter, so the need for an external controller is eliminated. For an alternative way of liquid flow control, i.e. by using a close-coupled pump, please see our leaflet ‘Liquid Dosing Systems’.> Multi-Bus technologyBronkhorst High-Tech developed their latest digital instruments according to the “multi-bus” principle. The basic pc-board on the instrument contains all of the general functions needed for measurement and control. It has analog I/O-signals and also an RS232 connection as a standard feature. In addition there is thepossibility of integrating an interface board with DeviceNet™, Profibus-DP®, Modbus-RTU, EtherCAT® or FLOW-BUS protocol.> General LIQUI-FLOW® featuresu fast and accurate measuring signalu insensitive to mounting positionu very small internal volumeu suitable for liquids with low boiling pointsu for laboratory and OEM applicationsu also available for industrial applications, with IP65 housing, ATEX Cat. 3, Zone 2> Digital featuresu DeviceNetTM, Profibus-DP®, Modbus-RTU, EtherCAT® or FLOW-BUS slaveu RS232 interfaceu alarm and counter functions> Fields of applicationu Semiconductor industryu HPLC applicationsu Chemical industryu Food & Pharmaceutical industryu Analytical laboratoriesLIQUI-FLOWTM Series L10 / L20 Digital Mass Flow Meters / Controllers for LiquidsCommunication (I/O)A RS232 + analog (n/c control)B RS232 + analog (n/o control)D RS232 + DeviceNetTM (n/c control)E RS232 + DeviceNetTM (n/o control)M RS232 + Modbus-RTU (n/c control)N RS232 + Modbus-RTU (n/o control)P RS232 + Profibus-DP® (n/c control)Q RS232 + Profibus-DP® (n/o control)R RS232 + FLOW-BUS (n/c control)S RS232 + FLOW-BUS (n/o control)T RS232 + EtherCAT® (n/c control)U RS232 + EtherCAT® (n/o control) Sensor code Factory selected Internal seals K Kalrez (FFKM) Connections (in/out) 1 1/8“ OD compression type 2 1/4“ OD compression type 3 6 mm OD compression type 8 1/4” Face seal male 9 Other Supply voltage D +15…24 Vdc Analog outputA 0…5 VdcB 0…10 VdcF 0…20 mA sourcingG 4…20 mA sourcing L13 (I) Meter, max. 100 g/h L23 (I) Meter, max. 1000 g/h L13V12 Controller, max. 100 g/h L23V12 Controller, max. 1000 g/h > Technical specificationsMeasurement / control systemAccuracy, standard : ±1% FS(based on actual calibration)Turndown : L10 Series 1 : 20 (5 ... 100%) L20 Series 1 : 50 (2 … 100%)Reproducibility : ±0,2% FS typical H2OSettling time (controller) : < 2 secondsOperating temperature : 5…50°CTemperature sensitivity : ±0,1% FS/°CAttitude sensitivity : negligibleWarm-up time : 30 min for optimum accuracy; 10 min. for accuracy ±2% FSMechanical partsMaterial (wetted parts) : Stainless steel 316L / 320; other on requestProcess connections : 1/8”, 1/4” or 6 mm OD compression type; 1/8” or 1/4” face seal male; other on requestPurge connection (controller) : 1/16” OD compression typeSeals : Kalrez-6375; other on requestIngress protection (housing) : IP40 or IP65Electrical propertiesPower supply : +15…24 VdcPower consumption : Meter: 100 mA; Controller: 350 mA; Add 50 mA for Profibus, if applicableAnalog output/command : 0...5 (10) Vdc or 0 (4)…20 mA (sourcing output)Digital communication : Standard: RS232 Options: Profibus-DP®, DeviceNetTM, Modbus-RTU, EtherCAT®, FLOW-BUSElectrical connection IP40 configurationAnalog/RS232 : 9-pin D-connector (male);Profibus-DP® : bus: 9-pin D-connector (female); power: 9-pin D-connector (male);DeviceNetTM : 5-pin M12-connector (male);Modbus-RTU/FLOW-BUS : RJ45 modular jackElectrical connection IP65 configurationAnalog/RS232 : 8 DIN (male)Profibus-DP® : bus: 5-pin M12 (female); power: 8 DIN (male)DeviceNetTM : 5-pin M12 (male)EtherCAT® : 2x RJ45 modular jack (in/out)Modbus-RTU/FLOW-BUS : 5-pin M12 (male)CalibrationReferences : Verified by NKO, the Dutch calibration organisation, and traceable to Dutch and international standards.Liquids : Standard calibration: H2O or IPA (Isopropyl Alcohol); for other liquids apply to factory.System : Precision laboratory balances.Technical specifications subject to change without notice.> Models and flow rangesLiquid Mass Flow Meters; PN100 (pressure rating 100 bar)Model min. flow max. flowL13 / L13I 0,25…5 g/h 5…100 g/hL23 / L23I 2…100 g/h 20…1000 g/hLiquid Mass Flow Controllers; PN100 (P-max 100 bar)Model min. flow max. flowL13V12 / L13I+C2I 0,25…5 g/h 5…100 g/hL23V12 / L23I+C2I 2…100 g/h 20…1000 g/hIndicated ranges are based on H2O. Higher pressure ratings are available on special request.> Model number identification LNN VNN - A A A - NN - A - NNA L23 Mass Flow Meter for Liquids > Dimensions and weightsMass Flow Meter Model A B C H K Weight (kg) L13 (1/8” OD) 47 98 47 118 25 0,4 L23 (1/4” OD) 47 102 47 121 25 0,4 Dimensions in mm Mass Flow Controller Model A B C H K Weight (kg) L13V12 (1/8” OD) 77 128 47 118 25 0,7 L23V12 (1/4” OD) 77 132 47 121 25 0,7 Dimensions in mmIP65 Mass Flow Meter Model A B C H K L Weight (kg) L13I (1/8” OD) 47 98 74 125 25 36 0,9 L23I (1/4” OD) 47 102 74 128 25 36 0,9 Dimensions in mmIP65 Mass Flow Controller Model A B C H K L Weight (kg) L13I+C2I (1/8” OD) 127 178 74 125 29 36 1,4 L23I+C2I (1/4” OD) 127 178 74 128 29 36 1,4 Dimensions in mm> Industrial style LIQUI-FLOW® seriesThe LIQUI-FLOWTM series L10I/L20I digital Liquid Flow Meters / Controllers for low flow ranges are equipped with a rugged ‘industrial style’ (IP65) pc-board housing for use in industrial environments or even Zone 2 hazardous areas, due to their ATEX category 3 approval. The instruments operate on a thermal, thru-flow measuring principle. The flow meter can be connected to a control valve to form a closed control loop. The standard direct acting valve (model C2I) is normally closed, has a pressure capability of 100 bar (1500 psi) and a purge connection for easy elimination of air or gas. L23I Mass Flow Meter, IP65 configuration IP65 Mass Flow Meter with close-coupled Control Valve1/16” Nijverheidsstraat 1a, NL-7261 AK Ruurlo The NetherlandsT +31(0)573 45 88 00 F +31(0)573 45 88 08 I www.bronkhorst.com E info@bronkhorst.comE.L20.0812.H©BHT2012-036 > Application examplesVerifying pumpsLIQUI-FLOW® flow meters are used in analytical applications in combination with HPLC pumps, verifying the pump performance or even, as shown in this example, close-coupled with a gear pump. Using the integrated PID controller, the setpoint signal continuously adjusts the rotation speed of the pump.GMP validation in food & pharma filling processesIn food and pharmaceutical applications critical filling processes must be very accurately and, above all traceably documented. LIQUI-FLOW® Series L10/L20 are particularly suitable for this task. The main features of these digital instruments are: high precision, fast response, compact design and a very small internal volume. > VaporizingLiquid Delivery with Vapour ControlThe CEM-System (Controlled Evaporation and Mixing) is an innovative Liquid Delivery System (LDS) that can be applied for atmospheric or vacuum processes. The vapour generation system consists of a liquid flow controller, an MFC for carrier gas and a temperature controlled mixing and evaporation device. The system is suitable for mixing liquid flows of 0,25-1200 g/h resulting in saturated vapour flows of 50 mln/min up to 100 ln/min. This vaporizer system can replace bubblers. New opportunities created with the CEM-system: mixtures can be evaporated and even solids, dissolved in solvents can be vaporised successfully.Features u Accurately controlled gas/liquid mixture (mass flow) u Fast response u High reproducibility u Handles water, solvents, liquid mixtures u Very stable vapour flow u Flexible selection of gas/liquid ratio u Lower working temperature than conventional systemVapour delivery applicationsu CVD (Chemical Vapour Deposition), e.g. for hardening, thin film coating or planarization processes u Testing/calibration of analyzers with reference gas vapor concentrations u Toxic gas effects on protective clothing u Analyzers with reference H2O vapour concentrations u Humidification of fuels u Anaestheticsprocess sample in process sample outHPLC columnHPLC injectionvalvecolumn heaterdetectorHPLC pumpliquid mass flow meter/controllersolventreservoirOption 2: flow validationOption 1:flow controlsolvent reservoirpcpump 3/2-way valveinverse flowmass flow meterfilling processfilling processfilling processsolvent reservoirBatch filling processE-7100, control panels for: Liquid flow Temperature Carrier gasMass flowcontrollerMixing valveFlow meter for liquidsHumidifiedatmospherereactor,chamber,cellH2OHeat exchangerCEMGas