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µ-FLOW series L01

µ-FLOW series L01
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Series L01 / L02 Digital Mass Flow Meters / Controllers for Liquids > Introduction Bronkhorst 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, gathered over many years, has resulted in three product series that cover Full Scale flow ranges from 75 mg/h up to 20 kg/h. > For ultra low flow ranges Today's market for liquid flow meters tends to develop into the very small flow ranges. With the thermal liquid mass flow meters / controllers of the g-FLOW Series, Bronkhorst offers the solution for this complicated task. The compact L01 series can be supplied in ranges from 5...100 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 75...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, DeviceNet™1, Modbus, EtherCAT® or FLOW-BUS can be integrated. > g-FLOW series L01 / L02 The g-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 AT is sensed by the upstream and downstream temperature sensors and this AT is a function of both the flow-rate and heat capacity of the liquid to be measured. > Liquid flow control Flow 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 g-FLOW series L01 / L02 ♦ fast and accurate measuring signal ♦ insensitive to mounting position ♦ very small internal volume (sensor: 1,5.33 gl) ♦ stainless steel sensor ♦ pressure rating of 100 bar for flow controllers up to 1000 bar for flow meters ♦ suitable for liquids with low boiling points ♦ for laboratory and OEM applications > Digital features ♦ DeviceNet™1, PROFIBUS DP, Modbus, EtherCAT® or FLOW-BUS slave ♦ RS232 interface ♦ alarm and counter functions > Fields of application ♦ Semiconductor industry ♦ HPLC applications ♦ Chemical industry ♦ Food & Pharmaceutical industry ♦ Analytical laboratories

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> Models and flow ranges Measurement / control Accuracy, standard (based on actual calibration) Turndown Reproducibility Settling time (controller) Operating temperature Temperature sensitivity Attitude sensitivity Warm-up time Mechanical parts Material (wetted parts) Process connections Liquid Mass Flow Meters; PN400 (pressure rating 400 bar)Model min. flow max. flow L01 5 ... 100 mg/h 0,1 ... 2 g/h Purge connection (controller) Seals Weight Ingress protection (housing) Electrical properties Power supply Power consumption Analog output/command Digital communication Electrical...

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