Bronkhorst® model L13 Liquid Flow Meters (LFMs) are suited for precise measurement of flow ranges between 0,25…5 g/h and 5...100 g/h at operating pressures up to 100 bar. The LFM consists of a thermal mass flow sensor and a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for optional mass flow 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 DeviceNet™, PROFIBUS DP, Modbus, EtherCAT® or FLOW-BUS protocols.
Fast and accurate measuring signal
Insensitive to mounting position
Very small internal volume
Suitable for liquids with low boiling points
Analog, RS232 or fieldbus communication
Thông số kỹ thuật
| Electrical properties |
| Power supply |
+15…24 Vdc +/-10% |
Max. power consumption
(meter only) |
Supply
15 V
24 V |
at voltage I/O
100 mA
65 mA |
at current I/O
120 mA
85 mA |
| PROFIBUS DP |
add 53 mA (15 V supply) or 30 mA (24 V supply) |
| EtherCAT® |
add 66 mA (15 V supply) or 41 mA (24 V supply) |
| DeviceNet™ |
add 48 mA (24 V supply) |
| Analog output |
0...5 (10) Vdc or 0 (4)...20 mA (sourcing output) |
| Digital communication |
standard: RS232;
options: PROFIBUS DP, DeviceNet™, EtherCAT®, Modbus RTU or ASCII, FLOW-BUS |