Bronkhorst® EL-FLOW® Base model F-201AB Mass Flow Controllers (MFCs) are standard and straightforard instruments suited for precise measurement and control of flow ranges between 0,4…20 ln/min and 1,4…70 ln/min at operating pressures between vacuum and 10 bar(g). EL-FLOW® Base instruments are equipped with a digital pc-board, offering high accuracy, excellent temperature stability and fast response. In addition to the standard analog I/O the MFCs also offer RS232 or Modbus-RTU or -ASCII communication.
Accurate mass flow measurement/control
Proven thermal bypass sensor
Fast response, excellent repeatability
Virtually pressure and temperature independent
Cost effective solution
Thông số kỹ thuật
| Measurement / control system |
|
Accuracy (incl. linearity)
(based on actual calibration)
|
±1% FS |
| Turndown |
1:50 (2...100%) |
| Repeatability |
< 0,2% Rd |
|
Settling time (controller)
|
approx. 1 second |
| Max. Kv-value |
6,6 x 10-2 |
| Operating temperature |
0…50°C |
| Temperature sensitivity |
zero: < 0,1% FS/°C; span: < 0,1% Rd/°C |
| Leak integrity, outboard |
tested < 2 x 10-9 mbar l/s He |
| Attitude sensitivity |
max. error at 90° off horizontal 0,2% FS at 1 bar, typical N2 |
| Warm-up time |
30 min. for optimum accuracy
2 min for accuracy ± 2% FS |