Bronkhorst® model F-232MI Mass Flow Controllers (MFCs) are suited for accurate measurement and control of flow ranges between 2…10 ln/min and 2…100 ln/min with an operating pressure up to 400 bar and max. 400 bar pressure difference (ΔP). The MFC consists of a thermal mass flow sensor, a precise control valve and a microprocessor based pc-board with signal and fieldbus conversion. As a function of a setpoint value, the flow controller swiftly adjusts the desired flow rate. The IN-FLOW model is of rugged design (IP65) for use in industrial environments or even Zone 2 hazardous areas, with optional ATEX Cat. 3 approval.
IN-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.
High accuracy, excellent repeatability
Fast response
Operating pressure / delta-P up to 400 bar
Compact, rugged design (IP65, dust and waterproof)
Virtually pressure and temperature independent
Thông số kỹ thuật
| Measurement / control system |
Accuracy (incl. linearity)
(based on actual calibration) |
±0,5% Rd plus ±0,1% FS |
| Turndown |
1:50 |
| Multiple fluid capability |
storage of max. 8 calibration curves |
| Repeatability |
< 0,2% Rd |
| Settling time (controller) |
2…4 seconds |
| Control stability |
< ±0,1% FS |
| Operating temperature |
-10…+70°C;
for ATEX cat. 3 0…50°C
|
| Temperature sensitivity |
zero: < 0,05% FS/°C; span: < 0,05% Rd/°C |
| Pressure sensitivity |
0,1% Rd/bar typical N2; 0,01% Rd/bar typical H2 |
| Leak integrity, outboard |
tested < 2 x 10-9 mbar l/s He |
| Attitude sensitivity |
max. error at 90° off horizontal 0,2% at 1 bar, typical N2 |
| Warm-up time |
30 min. for optimum accuracy
2 min for accuracy ± 2% FS |