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Coriolis Flow Meters
QFlow – QMASS 5540 Series
The QFlow QMASS 5540 is a DN40 bent-tube Coriolis flow meter for high-capacity mid-flow measurement in oil, gas and chemical plant. A single sensor measures mass flow, density and temperature directly to 30,000 kg/h at ±0.1 % of reading, and 4–20 mA with HART and Modbus RTU outputs integrate it into analogue loops and digital networks. DN40 flanged connections rated to 40 or 100 bar suit demanding process lines. Within the QMASS family choose this size for duties to 30,000 kg/h; sister sizes run from 360 to 480,000 kg/h.
Measurement range
0 to 30000 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
−70…+160 °C
Approvals / Protection
ATEX / IECEx, up to IP67
Technical Specifications
| Nominal size | DN40 measuring tube; DN40 flange end connection |
|---|---|
| Repeatability | 0.05 %, 0.075 %, 0.1 % or 0.25 % of reading (grade-dependent) |
| Max. working pressure | up to 100 bar depending on selected pressure rating (40 bar or 100 bar) |
| Ambient temperature | Operating temp. −30 to +60 °C or −40 to +60 °C (depends on transmitter version) |
| Environmental / enclosure rating | IP65 / IP67 |
| Power supply | 85 to 265 V AC or 12 to 24 V DC |
Key Features
- Stable measurement when process conditions change.
- Easier retrofit on congested skids and small lines.
- Supports confident measurement in critical process applications.
- Designed for demanding industrial environments.
- Integrates easily with modern industrial control systems.
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