EL-FLOW Select F-201CV

Digital Thermal Mass Flow Controller for Gases

  • ♦ High accuracy
  • ♦ Fast response, excellent repeatability
  • ♦ Optional Multi Fluid / Multi Range functionality
  • ♦ Virtually pressure and temperature independent
  • ♦ Compact design

 

Gas Mass Flow Controllers for low flow rates

Bronkhorst® model F-201CV Mass Flow Controllers (MFCs) are suited for accurate measurement and control of flow ranges between 0,16…8 mln/min and 0,5…25 ln/min at operating pressures between vacuum and 64 bar. 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.

EL-FLOW® Select 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™, EtherCAT®, PROFIBUS DP, PROFINET, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK or FLOW-BUS protocols. The EL-FLOW® Select design features optional Multi Gas / Multi Range functionality, providing (OEM-) customers with optimal flexibility and process efficiency.

Technical specifications

Measurement / control system
Flow range (intermediate ranges available)min. 0,16…8 mln/min
max. 0,5…25 ln/min
(based on N2)
Accuracy (incl. linearity) (based on actual calibration)± 0,5 % RD plus ±0,1%FS
Repeatability< 0,2 % RD
Turndown ratioup to 1:187,5 (1:50 in analog mode)
Multi fluid capabilitystorage of max. 8 calibration curves;
optional Multi Gas / Multi Range functionality up to 10 bar abs
Settling time (in control, typical)standard: 1…2 seconds
option: down to 500 msec
Control stability< ± 0,1 % FS (typical for 1 ln/min N2)
Operating temperature-10 … +70 °C
Temperature sensitivityzero: < 0,05% FS/°C; span: < 0,05% Rd/°C
Pressure sensitivity< 0,1% Rd/bar typical N2; 0,01% Rd/bar typical H2
Max. Kv-value6,6 x 10-2
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)64 bar abs
Process connectionscompression type or face seal (VCR/VCO) couplings
Sealsstandard: FKM/Viton®;
options: EPDM, FFKM/Kalrez®, FDA and USP Class VI approved compounds
Weight0,6 kg
Ingress protectionIP40
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: PROFIBUS DP, CANopen®, DeviceNet™, PROFINET, EtherCAT®, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK, FLOW-BUS
Electrical connection
Analog/RS2329-pin D-connector (male);
PROFIBUS DPbus: 9-pin D-connector (female);
power: 9-pin D-connector (male);
CANopen® / DeviceNet™5-pin M12-connector (male);
FLOW-BUS/Modbus-RTU/ASCIIRJ45 modular jack
Modbus TCP / EtherNet/IP / POWERLINK2 x RJ45 modular jack (in/out);
EtherCAT®/ PROFINET2 x RJ45 modular jack (in/out)

Technical specifications subject to change without notice.

 
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