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.

As the official authorized partner and exclusive regional representative for Micro Motion, Seven Star LLC proudly supplies the ELITE CMF400 Coriolis meter to industrial customers across Oman and the GCC, ensuring every unit is genuine Emerson-manufactured product backed by full manufacturer warranty and dedicated local commissioning and calibration 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.

As the officially authorized partner for Micro Motion, 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.

Call To Action

Contact Seven Star LLC to request a formal quotation for the ELITE CMF400 Coriolis flow and density meter, confirm regional warehouse stock, or download the full technical datasheet. As the authorized partner for Micro Motion in Oman and the GCC, Seven Star LLC’s instrumentation division is ready to support your custody transfer and process measurement project with genuine meters and dedicated technical assistance.