Bronkhorst

LOW-ΔP-FLOW F-201EI

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-201EI

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

Bronkhorst® model F-201EI Mass Flow Controllers (MFCs) are suited for precise measurement of flow ranges between 0,028…1,4 ln/min and 0,24…12  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 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 DeviceNet™, PROFIBUS DP, Modbus or FLOW-BUS protocols.


Technical specifications

Measurement / control system
Accuracy (incl. linearity)
(based on actual calibration)
±1%FS
Turndown 1:50 (2...100%)
Multiple fluid capability storage of max. 8 calibration curves
Repeatability < 0,2% Rd
Settling time (controller) 2...3 seconds
Control stability < ±0,1% FS (typical)
Max. Kv-value 6,6 x 10-2
Operating temperature -10…+70°C;
for ATEX Cat.3 0... 50°C
Temperature sensitivity < 0,1% FS/°C
Pressure sensitivity 0,1% Rd/bar typical N2
Leak integrity, outboard tested < 2 x 10-9 mbar l/s He
Mounting position horizontal
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
Max. operating pressure 10 bar
Process connections compression type or face seal couplings
Seals standard: Viton®; options: EPDM, Kalrez® (FFKM)
Weight 1,3 kg
Ingress protection (housing) 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
PROFIBUS DP add 53 mA (15 V supply) or 30 mA (24 V supply)
DeviceNet™ add 48 mA (24 V supply)
Analog output/command 0...5 (10) Vdc or 0 (4)…20 mA (sourcing output)
Digital communication standard: RS232;
options: PROFIBUS DP, DeviceNet™, Modbus RTU or ASCII, FLOW-BUS
Electrical connection
Analog/RS232 8 DIN (male);
PROFIBUS DP bus: 5-pin M12 (female);
power: 8 DIN (male);
Devicenet™ 5-pin M12 (male);
FLOW-BUS/Modbus-RTU/ASCII 5-pin M12 (male)

Technical specifications and dimensions subject to change without notice.


Downloads

Brochures
LOW-ΔP-FLOW Brochure

Manuals
General manual digital instruments
Operating instructions digital instruments

Hook-up diagrams
Analog IO - RS232
DeviceNet
FLOW-BUS
Modbus-RTU
PROFIBUS DP

Dimensional drawing


Bronkhorst High-Tech B.V.

Nijverheidsstraat 1A
NL-7261 AK Ruurlo (NL)
Tel. +31 573 45 88 00
info@bronkhorst.com

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