Gas Mass Flow Controllers
EL-FLOW Select F-201CV
These gas mass flow controllers & meters can be paired with your pressure reactor to allow 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 mass flow controller 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.
Key features of these mass flow controllers include:
- High accuracy
- Fast response, excellent repeatability
- Optional Multi Fluid / Multi Range functionality
- Virtually pressure and temperature independent
- Compact design
The 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.
Other models/specifications are also available.
Talk to us today about your complete pressure reactor system requirements.
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 ratio | up to 1:187,5 (1:50 in analog mode) |
| Multi fluid capability | storage 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 sensitivity | zero: < 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-value | 6,6 x 10-2 |
| Leak integrity, outboard | tested < 2 x 10-9 mbar l/s He |
| Attitude sensitivity | max. error at 90° off horizontal 0,2% at 1 bar, typical N2 |
| Warm-up time | 30 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 connections | compression type or face seal (VCR/VCO) couplings |
| Seals | standard: Viton®; options: EPDM, Kalrez® (FFKM), FDA and USP Class VI approved compounds |
| Weight | 0,6 kg |
| Ingress protection | IP40 |
Electrical Properties
| Power supply | +15 … 24 Vdc | ||||
|---|---|---|---|---|---|
| Max. power consumption |
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| Analog output | 0…5 (10) Vdc or 0 (4)…20 mA (sourcing output) | ||||
| Digital communication | standard: RS232; options: PROFIBUS DP, CANopen®, DeviceNet™, PROFINET, EtherCAT®, Modbus RTU, ASCII or TCP/IP, EtherNet/IP, POWERLINK, FLOW-BUS |
Electrical Connection
| Analog/RS232 | 9-pin D-connector (male); |
|---|---|
| PROFIBUS DP | bus: 9-pin D-connector (female); power: 9-pin D-connector (male); |
| CANopen® / DeviceNet™ | 5-pin M12-connector (male); |
| FLOW-BUS/Modbus-RTU/ASCII | RJ45 modular jack |
| Modbus TCP / EtherNet/IP / POWERLINK | 2 x RJ45 modular jack (in/out); |
| EtherCAT®/ PROFINET | 2 x RJ45 modular jack (in/out) |
UK / Europe / Global Delivery
Developed in collaboration with our clients / Bespoke design service
Committed to developing sustainable & practical improvements for scientists worldwide
Martyn Fordham, MD
