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Thiết bị đo lưu lượng Coriolis cho dòng chảy thấp MINI CORI-FLOW M15
Đại lý phân phối Flow Meter BRONKHORST tại Việt Nam
Bộ điểu khiển và đo lưu lượng Coriolis cho dòng chảy thấp
Low Flow Coriolis Mass Flow Meters / Controllers for Liquid and Gases
mini CORI-FLOW™ Mass Flow Meters and Controllers are precise and compact instruments, based on the Coriolis measuring principle, designed to cover the needs of the low flow market. Bronkhorst® model M15 Mass Flow Meter (MFM) is suited for highly accurate measurement of gas or liquid flow ranges between 0,2…5 kg/h and 3…300 kg/h (which corresponds with 2,67…66,6 ln/min up to 40…4000 ln/min when used on nitrogen) at operating pressures up to 100 bar (higher on request). The instruments are equipped with a robust IP65 weatherproof housing and are optionally available with ATEX approval for use in Zone 2 hazardous areas.
The instrument contains a microprocessor based pc-board with signal and fieldbus conversion and a PID controller for optional mass flow control by means of a separately mounted control valve or pump.
Technical specifications
| Measurement / control system | |
|---|---|
| Flow range (intermediate ranges available) | min. 0,2…5 kg/h; max. 3…300 kg/h |
| Mass flow accuracy | Liquid: ±0,2% of rate; Gas: ±0,5% of rate |
| Repeatability | ± 0,5 % of rate ± ½(ZS* x 100/actual flow)% |
| Turndown ratio | up to 1:100 |
| Zero stability (ZS) | < ± 50 g/h (Guaranteed at constant temperature and for unchanging process and environment conditions.) |
| Response time (sensor) | ≤ 200 msec |
| Temperature effect | on zero: < 5 g/h/°C; on span: < 0,001% 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 ; for ATEX Cat.3, Zone 2 max. 50°C |
| Mounting | Any position, attitude sensitivity negligible. External shocks or vibrations should be avoided. |
| Temperature accuracy | ± 0,5 °C |
| Density accuracy | < ± 5 kg/m³ |
| Leak integrity, outboard | tested < 2 x 10-9 mbar l/s He |
| Warm-up time | > 30 min for optimum accuracy |
| Mechanical parts | |
|---|---|
| Sensor | single tube, DN 3.1 |
| Material (wetted parts) | stainless steel 316L / 1.4404; |
| Housing | stainless steel 430F |
| Pressure rating (PN) | 100 bar abs , higher on request |
| Process connections | compression type or face seal (VCR/VCO) couplings (welded) |
| Seals | metal |
| Weight | 4,7 kg |
| Ingress protection | IP65 (weatherproof) |
| Electrical properties | |
|---|---|
| Power supply | +15…24 Vdc +/- 10% Max. ripple recommended: 50 mV tt |
| Max. power consumption | meter: max. 3 W; controller: max 7 W |
| Analog output | 0…5 (10) Vdc, min. load impedance > 2 kΩ; 0 (4)…20 mA (sourcing), max. load impedance < 375 Ω |
| Analog setpoint | 0…5 (10) Vdc, min. load impedance > 100 kΩ 0 (4)…20 mA (sourcing), max. load impedance ~ 250 Ω |
| Digital communication | standard: RS232; options: PROFIBUS DP, DeviceNet™, Modbus RTU or FLOW-BUS |
| Electrical connection | |
|---|---|
| Analog/RS232 | 8-pin DIN (male); |
| PROFIBUS DP | bus: 5-pin M12 (female); power: 8-pin DIN (male); |
| CANopen® / DeviceNet™ | 5-pin M12 (male); |
| FLOW-BUS/Modbus-RTU/ASCII | 5-pin M12 (male); |
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Trực tuyến:5
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Hôm nay:294
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Tuần này:25910
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Tuần trước:21065
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Tháng trước:43369
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Tất cả:3067818
