Bronkhorst mini CORI-FLOW ML120V00 (Ultra) Low Flow Coriolis Mass Flow Meter
The mini CORI-FLOW™ Mass Flow Meters and Controllers are precise and compact instruments based on the Coriolis measuring principle. They are designed to meet the needs of the low flow market. The Bronkhorst® model ML120V00 Mass Flow Meter (MFM) is suitable for highly accurate measurement of gas or liquid flow in the range of 0…200 g/h (which corresponds to 0…2.66 ln/min when used on nitrogen) at operating pressures up to 200 bar.
Low Flow Coriolis Mass Flow Meters for Liquid and Gases
The mini CORI-FLOW™ Mass Flow Meters and Controllers are precise and compact instruments based on the Coriolis measuring principle. They are designed to meet the needs of the low flow market. The Bronkhorst® model ML120V00 Mass Flow Meter (MFM) is suitable for highly accurate measurement of gas or liquid flow in the range of 0…200 g/h (which corresponds to 0…2.66 ln/min when used on nitrogen) at operating pressures up to 200 bar.
The flow meter offers “multi-range” functionality, allowing the user to rescale the factory-calibrated ranges while maintaining the original accuracy specifications. The instrument contains a microprocessor-based PC-board with signal and fieldbus conversion.
Technical specifications
| Measurement / control system | |
| Flow rates | Liquid: 0…200 g/h (nominal flow rate: 100 g/h); Gas: 0…2.66 ln/min (N2); Full Scale (FS) value is user-configurable |
| Mass flow accuracy | Liquid: ±0,2% Rd; Gas: ±0,5% Rd |
| Repeatability | ± 0,05 % of rate ± ½(ZS* x 100/actual flow)% |
| Turndown ratio | up to 1:4000 |
| Zero stability (ZS) | < ± 10 mg/h (Guaranteed at constant temperature and for unchanging process and environment conditions.) |
| Response time (sensor) | ≤ 200 msec |
| Temperature effect | on zero: < 3 mg/h/°C; on span: < 0,005% Rd/°C; self heating (at zero flow): < 10°C (Depends on flow rate, heat capacity fluid, T amb., T fluid and cooling capacity.) |
| Operating temperature | 0 … 70 °C |
| Mounting | any position, attitude sensitivity negligible. Instrument to be rigidly bolted to a stiff and heavy mass or construction for guaranteed zero stability. External shocks or vibrations should be avoided. |
| Temperature accuracy | ± 0,5 °C |
| Density accuracy | < ± 5 kg/m³ (at full scale flow) |
| Leak integrity, outboard | tested < 2 x 10-9 mbar l/s He |
| Warm-up time | > 30 min for optimum accuracy |
| Mechanical parts | |
| Material (wetted parts) | stainless steel 316L or comparable |
| Pressure rating (PN) | 200 bar abs |
| Process connections | compression type or face seal (VCR/VCO) couplings |
| Seals | metal |
| Weight | 0,8 kg |
| Ingress protection | 0,8 kg |
| Electrical properties | |
| Power supply | +15…24 Vdc +/- 10% Max. ripple recommended: 50 mV tt |
| Max. power consumption | max. 2,5 W |
| Analog output | 0…5 (10) Vdc, min. load impedance > 2 kΩ; 0 (4)…20 mA (sourcing), max. load impedance < 375 Ω |
| 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 M12 (female); power: 9-pin DIN (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) |
Technical specifications subject to change without notice.
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