Liquid Mass Flow Meters for low ow rates 

Bronkhorst model KAN-LF-01 Liquid Flow Meters are suited for precise measurement of ow ranges between 0.1~5ul/s at operating pressuresup to 100 bar. The LFM consists of a thermal mass ow sensor and a microprocessor based pc-board with signal and eldbus conversion and a PID controller foroptional mass ow control by means of a separately mounted control valve. 

LIQUI-FLOW™ series are equipped with a digital pc-board, offering high accuracy, excellent temperature stability and fast response. The main digital pc-board contains all of the general functions needed for measurement and control. In addition to the standard RS232 output the instruments also offer analog I/O. As an option, an on-board interface can be mounted to provide CANopen®, DeviceNet™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK or FLOW-BUS protocols. 

Technical speci cations 

Measurement / control system

Flow range ( ranges available )                                         0.1 ~ 5ml/s (based on H O)

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Accuracy (incl. linearity) (based on actual calibration)                       ± 1 % FS

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Repeatability                                                                            < 0,2 % FS (typical H O)

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Operating temperature                                                                                   5 … 50 °C

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Temperature sensitivity                                                                             ± 0,1% FS/°C

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Attitude sensitivity                                                                                         negligible

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Warm-up time                                                               30 min. for optimum accuracy; 

                                                                                            2 min for accuracy ± 2% FS

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