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Coriolis Flow Meters
QFlow – QMASS 5550 Series
The QFlow QMASS 5550 is a DN50 bent-tube Coriolis flow meter for high-capacity process measurement in oil, gas and chemical industries. A single sensor measures mass flow, density and temperature directly to 60,000 kg/h at ±0.1 % of reading, and 4–20 mA with HART and Modbus RTU outputs serve analogue loops and digital control. DN50 flanged connections rated to 40 or 100 bar make it a dependable choice for larger process lines. Within the QMASS family choose this size for duties to 60,000 kg/h; sister sizes run from 360 to 480,000 kg/h.
Measurement range
0 to 60000 kg/h mass flow
Accuracy
Up to ±0.1 % of reading
Output / communications
4–20 mA, HART and Modbus RTU / RS485
Process connection
Flanged process connection
Process temperature
−200 to +300 °C
Approvals / Protection
ATEX / IECEx, up to IP67
Technical Specifications
| Nominal size | DN50 measuring tube; DN50 flange |
|---|---|
| Repeatability | 0.05 %, 0.075 %, 0.1 % or 0.25 % of reading depending on selected grade |
| Max. working pressure | 40 bar, 100 bar |
| Ambient temperature | −30 to +60 °C or −40 to +60 °C depending on transmitter version |
| Environmental / enclosure rating | Sensor and transmitter enclosures rated to IP65/IP67 |
| Power supply | Universal power supply 85 to 265 V AC or 12 to 24 V DC |
Key Features
- Measures mass flow, density and temperature directly across 0 to 60,000 kg/h.
- High ±0.1 % of reading accuracy with 4–20 mA, HART and Modbus RTU outputs.
- DN50 flanged connections rated to 40 or 100 bar for high-capacity process flow.
Typical Applications
- Chemical processing - transfer
- Oil and gas - blending and additive skids
- Food and beverage - syrups
- Power and utilities - treatment chemicals and process liquids
- General industrial