Bronkhorst

LOW-ΔP-FLOW F-201DI

Mass Flow Controller for low pressure drop or corrosive gas service, industrial style

  • Large bore capillary (thermal bypass sensor)
  • Very low pressure drop
  • Less sensitivity to humidity or dirt
  • Suitable of corrosive gases
  • Easy to purge
  • Rugged, weatherproof construction (IP65, dust and waterproof)
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LOW-ΔP-FLOWF-201DI

Thermal Mass Flow Controllers for low pressure drop or corrosive gas applications, industrial style

Bronkhorst® model F-201DI Mass Flow Controllers (MFCs) are suited for precise measurement of flow ranges between 0,42…21 mln/min and 0,042…2,1 ln/min (N2-equivalent). The instruments are particularly suited for corrosive gases or applications with very low differential pressure (∆P). Compared to conventional instruments, LOW-∆P-FLOW MFCs have larger flow channels to minimize the risk of clogging, facilitate cleaning and purging, and cause lower pressure drop (the sensor only requires 0,5 to 5 mbar). This 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.

The integrated digital pc-board provides signal and fieldbus conversion as well as PID controller functionality for mass flow control by means of the integrated control valve. 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™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK or FLOW-BUS protocols.


Technical specifications

Measurement / control system
Flow range (intermediate ranges available)min. 0,42…21 mln/min
max. 0,042…2,1 ln/min
(based on N2)
Accuracy (incl. linearity) (based on actual calibration)± 1 % FS
Repeatability< 0,2 % RD
Turndown ratio1:50 (2…100%)
Max. operating pressure10 bar g
Multi fluid capabilityStorage of max. 8 calibration curves
Settling time (in control, typical)2 … 3 sec.
Control stability< ± 0,1 % FS (typical)
Operating temperature-10 … +70 °C
for ATEX cat. 3 and FM Class 1 Div 2 : 0…50°C
Mountinghorizontal
Temperature sensitivity< 0,1% FS/°C
Pressure sensitivity0,1% Rd/bar typical N2
Max. Kv-value6,6 x 10-2
Leak integrity, outboardtested < 2 x 10-9 mbar l/s He
Warm-up time30 min. for optimum accuracy
2 min for accuracy ± 2% FS
Mechanical parts
Material (wetted parts)stainless steel 316L or comparable;
other on request
Process connectionscompression type or face seal (VCR/VCO) couplings
Sealsstandard: FKM/Viton®;
options: EPDM, FFKM/Kalrez®, FDA and USP Class VI approved compounds
Weight1,3 kg
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
extra for fieldbus
<75 mA
<50 mA
Analog output0…5 (10) Vdc or 0 (4)…20 mA (sourcing output)
Digital communicationstandard: RS232;
options: CANopen®, DeviceNet™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK or 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)
Modbus TCP / EtherNet/IP / POWERLINKbus: 2 x 5-pin M12 (female) (in/out);
power: 8 DIN (male);
EtherCAT®/ PROFINETbus: 2 x 5-pin M12 (female) (in/out);
power: 8 DIN (male)
IEC 61010-1IEC-61010-1:2010 including national deviations for UL (61010-1:2012) and CSA (C22.2 No. 61010-1-12)
Control valve options
External actuator options to be connected to the controller
Certification for hazardous areas
Approvals / certificates

Technical specifications subject to change without notice.

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

Downloads

Brochures
LOW-ΔP-FLOW Brochure
Manuals
General manual digital instruments
Operating instructions digital instruments
Quick start guide LOW-dP-FLOW industrial style
Hook-up diagrams
Analog IO - RS232
DeviceNet
FLOW-BUS
Modbus RTU/ASCII
PROFIBUS DP
Industrial Ethernet (EtherCAT, EtherNet/IP, Modbus-TCP, POWERLINK, PROFINET)
CANopen
Optional Bus and IO Configurations
Dimensional drawing
Dimensional drawing F-201DI_F-201EI
Certificates
ATEX: KEMA 10ATEX0111X
KCs certificate IN-FLOW MFC models (Korean)
FM approval Class I, Div. 2 (US), FM17US0363X
FM approval Class I, Div. 2 (CA), FM17CA0173X