Micro Motion ELITE CMF400 Coriolis Flow and Density Meter
Overview
The Micro Motion ELITE CMF400 is a high-capacity Coriolis flow and density meter from Emerson’s Micro Motion brand, purpose-built for large-line-size liquid, gas, and slurry applications where accuracy and long-term measurement stability cannot be compromised. Built on the proven U-shaped dual-tube CMF sensor platform in 316L stainless steel construction, the ELITE CMF400 directly measures mass flow, density, and temperature simultaneously, eliminating the compounding errors that inferential flow technologies introduce when density, viscosity, or pressure vary.
With engineering support in Muscat, Seven Star LLC supplies the ELITE CMF400 Coriolis meter to industrial customers across Oman and the GCC, with manufacturer documentation and local technical support.
Measurement Principle
The Micro Motion ELITE CMF400 operates on the Coriolis effect: process fluid is split and routed through twin curved tubes that are vibrated at their natural resonant frequency by a drive coil. As mass flows through the vibrating tubes, the Coriolis force induces a measurable phase shift between the inlet and outlet legs of each tube, and this phase difference is directly proportional to mass flow rate — not volumetric flow — giving a true mass measurement unaffected by changes in fluid density, pressure, viscosity, or temperature. Tube density is simultaneously derived from the resonant frequency itself, so the ELITE CMF400 reports mass flow, volume flow, and density from a single sensor without any secondary instrumentation.
Because the measurement is fundamentally mechanical rather than inferential, the ELITE CMF400 delivers liquid mass flow accuracy of ±0.10% of rate as standard (±0.05% optional), with no straight-run piping requirements, no moving parts subject to wear, and no pressure drop penalty beyond the tube geometry itself. Smart Meter Verification allows operators to confirm sensor and transmitter health in real time without interrupting the process, supporting auditable measurement integrity for custody transfer and regulatory reporting.
Engineering Design of the ELITE CMF400
The CMF400 sensor is engineered around a rugged 316L stainless steel U-tube geometry sized for 4 to 6-inch (DN100–DN150) line connections, supporting the higher flow capacities required in bulk liquid transfer, loading and unloading terminals, and large process lines. The dual-tube balanced design cancels external vibration and pipeline noise, maintaining measurement stability even when mounted on structures subject to pump-induced vibration or nearby rotating equipment — a common installation challenge in refinery and petrochemical process areas.
The sensor pairs with a Micro Motion transmitter offering HART, Modbus, EtherNet/IP, PROFINET, and FOUNDATION Fieldbus connectivity, allowing direct integration into existing DCS, SCADA, or PLC-based control architectures without protocol conversion hardware. The meter’s extended operating envelope of -240 °C to 350 °C and pressure ratings up to 414 barg (6000 psig), combined with global hazardous-area and metrology certifications, allows a single platform to be specified across cryogenic, high-temperature, and high-pressure process duties.
Key Features
The ELITE CMF400 combines high-capacity Coriolis measurement with the reliability engineering Micro Motion is known for.
- Delivers liquid mass flow accuracy of ±0.10% of rate standard, with ±0.05% of rate available as an option.
- Measures density directly to ±0.0005 g/cm³ standard accuracy without a separate density instrument.
- Constructed in 316L stainless steel U-tube geometry for 4 to 6-inch (DN100–DN150) line sizes.
- Supports Smart Meter Verification for real-time, in-process diagnostic health checks.
- Operates across an extended process range of -240 °C to 350 °C and up to 414 barg.
- Integrates via HART, Modbus, EtherNet/IP, PROFINET, and FOUNDATION Fieldbus protocols.
- Requires no straight-run piping and introduces no moving parts subject to wear.
- Carries a broad portfolio of global hazardous-area and custody transfer approvals.
Industrial Applications
The Micro Motion ELITE CMF400 Coriolis meter is specified for custody transfer metering, chemical injection, bulk liquid loading and unloading, and process control in refineries, petrochemical plants, and gas processing facilities where high line capacity and measurement accuracy are both required. Its ability to measure mass flow and density simultaneously also makes it well suited to blending, batching, and concentration-monitoring applications across chemical manufacturing and hygienic processing lines.
Backed by genuine manufacturer documentation, Seven Star LLC distributes the ELITE CMF400 to oil and gas operators, petrochemical complexes, and process industries across Oman, Muscat, and the wider GCC, including the Sohar and Salalah industrial and free zones, providing local technical support for meter sizing, commissioning, and custody transfer verification.
Technical Specifications
The table below summarizes the key specifications of the Micro Motion ELITE CMF400 Coriolis flow and density meter.
| Parameter | Specification |
|---|---|
| Model | ELITE CMF400M (4–6 in. / DN100–DN150) |
| Measurement Principle | Coriolis mass flow and density |
| Sensor Material | 316L stainless steel, U-tube geometry |
| Liquid Mass Flow Accuracy | ±0.10% of rate standard, ±0.05% optional |
| Gas Mass Flow Accuracy | ±0.35% of rate |
| Density Accuracy (Liquid) | ±0.0005 g/cm³ standard, ±0.0002 g/cm³ optional |
| Process Temperature Range | -240 °C to 350 °C (-400 °F to 662 °F) |
| Maximum Pressure Rating | 414 barg (6000 psig) |
| Communication Protocols | HART, Modbus, EtherNet/IP, PROFINET, FOUNDATION Fieldbus |
| Diagnostics | Smart Meter Verification |
| Approvals | UL, CSA, ATEX, IECEx, NEPSI |
Request a Quote for Micro Motion ELITE CMF400 Coriolis Flow and Density Meter
Contact Seven Star LLC to request a formal quotation for the ELITE CMF400 Coriolis flow and density meter, confirm current availability and lead time, or download the full technical datasheet. Working closely with plant engineers in the region, Seven Star LLC’s instrumentation division is ready to support your custody transfer and process measurement project with genuine meters and dedicated technical assistance.
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- Datasheet Micro Motion ELITE CMF400 Coriolis Flow and Density Meter Datasheet Download
Micro Motion meter families
ELITE is the manufacturer's top performance family for flow and density, and the CMF400 is one of its larger line sizes. The G-Series is a newer, very compact family for general duty. Each sensor is paired with a Coriolis transmitter, and the range also includes density and viscosity meters. Liquids, gases and slurries can all be measured, which is why these meters appear in oil and gas, refining, chemical, food and marine service.Ordering Micro Motion meters: what we need
A Micro Motion sensor and its transmitter each have their own model code and serial number; send both. For a new meter we need the fluid, flow range, density, viscosity, operating pressure and temperature, line size, process connection and rating, wetted material, hazardous area approval, outputs and protocol. Custody transfer duty in the GCC should be stated up front because it changes the approvals and calibration options requested.Browse Micro Motion products by category: Flowmeters.
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