Bronkhorst® model L01 Liquid Flow Meters (LFMs) are suited for precise measurement of flow ranges between 5…100 mg/h and 0,1...2 g/h at operating pressures up to 400 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.
μ-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 or FLOW-BUS protocols.
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) |
| 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™, Modbus RTU or ASCII, FLOW-BUS |