LOW-ΔP-FLOW F-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 ml_n/min and 0,042…2,1 l_n/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 ml_n/min max. 0,042…2,1 l_n/min (based on N₂)









Accuracy (incl. linearity) (based on actual calibration)	± 1 % FS




Repeatability	< 0,2 % RD
Turndown ratio	1:50 (2…100%)


Max. operating pressure	10 bar g











Multi fluid capability	Storage 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


Mounting	horizontal
Temperature sensitivity	< 0,1% FS/°C








Pressure sensitivity	0,1% Rd/bar typical N₂
Max. Kv-value	6,6 x 10^-2


Leak integrity, outboard	tested < 2 x 10^-9 mbar l/s He




Warm-up time	30 min. for optimum accuracy 2 min for accuracy ± 2% FS

Mechanical parts







Material (wetted parts)	stainless steel 316L or comparable; other on request








Process connections	compression type or face seal (VCR/VCO) couplings

Seals	standard: FKM/Viton®; options: EPDM, FFKM/Kalrez®, FDA and USP Class VI approved compounds
Weight	1,3 kg
Ingress protection	IP65

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 output

0…5 (10) Vdc or 0 (4)…20 mA (sourcing output)

Digital communication

standard: RS232;
options: CANopen®, DeviceNet™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK or FLOW-BUS

Electrical connection
Analog/RS232	8 DIN (male);



PROFIBUS DP	bus: 5-pin M12 (female); power: 8 DIN (male);
CANopen® / DeviceNet™	5-pin M12 (male);

FLOW-BUS/Modbus-RTU/ASCII	5-pin M12 (male)

Modbus TCP / EtherNet/IP / POWERLINK	bus: 2 x 5-pin M12 (female) (in/out); power: 8 DIN (male);



EtherCAT®/ PROFINET	bus: 2 x 5-pin M12 (female) (in/out); power: 8 DIN (male)


IEC 61010-1	IEC-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

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
PROFIBUS DP
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