Bronkhorst

IN-FLOW F-231MI

Industrial Style High-Pressure Mass Flow Controller for Gases

  • 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
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IN-FLOWF-231MI

Industrial Style Gas Mass Flow Controllers for High Pressure / High Delta-P

Bronkhorst® model F-231MI Mass Flow Controllers (MFCs) are suited for accurate measurement and control of flow ranges between 10…500 mln/min and 0,2…10 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 or FM Class I, Div. 2 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 CANopen®, DeviceNet™, PROFIBUS DP, PROFINET, Modbus or FLOW-BUS protocols.


Technical specifications

Measurement / control system
Flow range (intermediate ranges available)min. 10…500 mln/min max. 0,2…10 ln/min
Accuracy (incl. linearity) (based on actual calibration)±0,5% Rd plus ±0,1% FS
Repeatability< 0,2 % RD
Turndown ratio1:50
Multi fluid capabilitystorage of max. 8 calibration curves
Settling time (in control, typical)2 4 sec.
Control stability< ± 0,1 % FS
Operating temperature-10 +70 °C for ATEX cat. 3 and FM Class 1 Div 2 : 0…50°C
Temperature sensitivityzero: < 0,05% FS/°C; span: < 0,05% Rd/°C
Pressure sensitivity0,1% Rd/bar typical N2; 0,01% Rd/bar typical H2
Leak integrity, outboardtested < 2 x 10-9 mbar l/s He
Attitude sensitivitymax. error at 90° off horizontal 0,2% at 1 bar, typical N2
Warm-up time30 min. for optimum accuracy 2 min for accuracy ± 2% FS
Mechanical parts
Material (wetted parts)stainless steel 316L or comparable
Pressure rating (PN)400 bar abs
Max. ΔPup to 400 bar dif.
Process connectionscompression type or face seal couplings
Sealsstandard: Viton®; options: EPDM, Kalrez® (FFKM)
Ingress protectionIP65
Electrical properties
Power supply+15 24 Vdc
Max. power consumption
Supply
15 V
24 V
at voltage I/O
290 mA
200 mA
at current I/O
320 mA
215 mA
PROFIBUS DPadd 53 mA (15 V supply) or 30 mA (24 V supply)
PROFINETadd 77 mA (15 V supply) or 48 mA (24 V supply)
CANopen® / DeviceNet™add 48 mA (24 V supply)
Analog output0...5 (10) Vdc or 0 (4)…20 mA (sourcing output)
Digital communicationstandard: RS232; options: PROFIBUS DP, PROFINET, DeviceNet™, Modbus RTU or ASCII, FLOW-BUS
Electrical connection
Analog/RS2328 DIN (male);
PROFIBUS DPbus: 5-pin M12 (female); power: 8 DIN (male);
CANopen® / DeviceNet™5-pin M12 (male);
FLOW-BUS/Modbus-RTU/ASCII5-pin M12 (male)
Control valve options
External actuator options to be connected to the controller
Ex-proof specifications
Approvals / certificates
Environmental / EMC0,1% Rd/bar typical N2; 0,01% Rd/bar typical H2

Technical specifications subject to change without notice.

For dimensional drawings and hook-up diagrams please visit the product page on our website

Downloads

Brochures
IN-FLOW brochure

Manuals
General manual digital instruments
Operating instructions digital instruments

Certificates
ATEX: KEMA 10ATEX0111X
FM approval Class I, Div. 2 (US), FM17US0363X
FM approval Class I, Div. 2 (CA), FM17CA0173X

Hook-up diagrams
Analog IO - RS232
DeviceNet
FLOW-BUS
Modbus-RTU
PROFIBUS DP
PROFINET
CANopen
Optional Bus and IO Configurations

Dimensional drawing
Dimensional drawing F-230MI_F-231MI_F-232MI


Bronkhorst USA inc.

57 South Commerce Way
Suite 120
USA - Bethlehem, PA 18017 
Tel.  +1-610-866-6750
[email protected]

     
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