Liquid Flow Meters-Controllers µ-FLOW series L01

> IntroductionBronkhorst 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. A wealth of experience has been gathered over the past 30 years, which has resulted in three product series that cover Full Scale flow ranges from 30 mg/h up to 20 kg/h.> From MICRO- to NANO-flow rangesToday’s market for liquid flow meters tends to develop into the very small flow ranges – even into nano-flow ranges. With the thermal liquid mass flow meters / controllers of the µ-FLOW Series, Bronkhorst High-Tech offers the solution for this complicated task. The compact L01 series can be supplied in ranges from 25…500 nanolitres per minute (1,5…30 mg/h) up to 0,1…2 g/h with a pressure rating up to 400 bar. For even higher pressures, up to 1000 bar (15000 psi), the L02 series can be offered for 7,5...150 mg/h up to 22,5...450 mg/h (based on H2O). In addition to the standard RS232 output the instruments also offer analog I/O. Moreover, an optional interface to Profibus-DP®, DeviceNetTM, Modbus, EtherCat® or FLOW-BUS can be integrated. > µ-FLOW series L01 / L02The µ-FLOW L01/L02 mass flow meter is basically a straight sensor tube without any moving parts or built-in obstructions. The heater/sensor assembly utilises the heat transfer principle and is arranged around the tube. Upon flow, the ?T is sensed by the upstream and downstream temperature sensors and this ?T is a function of both the flow-rate and heat capacity of the liquid to be measured. > Liquid flow controlFlow control is achieved by integrating a control valve onto the body of the liquid flow meter. This control valve, with a pressure rating of 100 bar, 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.> General features µ-FLOW series L01 / L02 u fast and accurate measuring signalu insensitive to mounting positionu very small internal volume (sensor: 1,5…33 µl)u stainless steel sensoru pressure rating of 100 bar for flow controllersup to 1000 bar for flow metersu suitable for liquids with low boiling pointsu for laboratory and OEM applications> Digital features u DeviceNetTM, Profibus-DP®, Modbus, EtherCat® or FLOW-BUS slaveu RS232 interfaceu alarm and counter functions> Fields of applicationu Semiconductor industryu HPLC applicationsu Chemical industryu Food & Pharmaceutical industryu Analytical laboratoriesµ-FLOWSeries L01 / L02 Digital Mass Flow Meters / Controllers for Liquids> Technical specificationsMeasurement / control system Accuracy, standard : ±2% FS (based on actual calibration)Turndown : 1 : 20 (5 ... 100%)Reproducibility : ±0,2% FS typical H2O Settling time (controller) : 2…4 secondsOperating temperature : 5 … 50°CTemperature sensitivity : ±0,2% FS/°CAttitude sensitivity : negligibleWarm-up time : approx. 10 min. for accuracy ±2% FSMechanical partsMaterial (wetted parts) : L01: stainless steel 316L; L02: duplex steelProcess connections : 30...100 mg/h: 10-32 UNF female only; >100 mg/h: 10-32 UNF female, 1/16” or 1/8” OD compression; other on request.Purge connection (controller) : 1/16” OD compression typeSeals : meter: all metal controller: Kalrez-6375; other on requestWeight : meter: 0,2 kg; controller: 0,3 kgIngress protection (housing) : IP40; other on requestElectrical 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 option: Profibus-DP®, DeviceNetTM, Modbus, EtherCat®, FLOW-BUSElectrical connection Analog/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); EtherCat® : 2 x RJ45 modular jack (in/out) Modbus/FLOW-BUS : RJ45 modular jack Technical specifications subject to change without notice. > Models and flow rangesLiquid Mass Flow Meters; PN400 (pressure rating 400 bar)Model min. flow max. flowL01 1,5 ... 30 mg/h 0,1 ... 2 g/h Liquid Mass Flow Meters; PN1000 (pressure rating 1000 bar)Model min. flow max. flowL02 7,5 ... 150 mg/h 22,5 ... 450 mg/hLiquid Mass Flow Controllers; PN100 (pressure rating 100 bar)Model min. flow max. flowL01V12 5 ... 100 mg/h 0,1 ... 2 g/h Indicated ranges are based on fluids with thermal properties similar to H2O / IPACalibrationReferences : Verified by NKO, the Dutch calibration organisation, and traceable to Dutch and international standards.Liquids : Standard calibration fluids: H2O or IPA (Isopropyl Alcohol); for other liquids apply to factory.System : Precision laboratory balances.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.comL01 Mass Flow Meter for ultra low liquid flow rangesE.L01.0911.G©BHT2011-069