Coriolis mass flow meters (CMFMs) integrate advanced sensing technology and structural design to deliver reliable, multi-functional flow measurement. Below are their core features, optimized for technical specifications, export documentation, and client technical consultations:
Vibration-Based Sensing StructureEquipped with one or more vibrating measuring tubes (common designs: U-shaped, straight, double-bent, or single-bent), driven by a piezoelectric or electromagnetic actuator at the tube’s natural frequency. The vibration is stable and not easily affected by external mechanical interference, ensuring consistent detection of Coriolis force-induced phase differences.
Direct Mass Flow SensingThe core feature distinguishing it from volumetric flow meters: it directly measures mass flow by detecting the phase difference between the inlet and outlet ends of the vibrating tube. This eliminates the need for density, temperature, or pressure compensation calculations, avoiding cumulative errors from indirect conversion.
Multi-Parameter Measurement Capability
A single device can simultaneously measure mass flow rate, fluid density, and temperature without additional sensors. For density measurement, it leverages the correlation between the natural frequency of the vibrating tube and the fluid density inside; temperature is detected by built-in temperature sensors on the tube wall. Some high-end models can also derive volumetric flow rate and concentration (for binary mixtures).
Non-Intrusive Flow Path DesignNo moving parts, obstacles, or throttling components in the fluid flow path. This design prevents pressure loss, avoids clogging or wear (critical for slurries or viscous media), and ensures unobstructed fluid passage, making it suitable for both clean and contaminated media.
Immunity to Flow Disturbances
Unaffected by flow profile distortions caused by upstream/downstream pipeline components (e.g., bends, valves, pumps). Unlike vortex or electromagnetic flow meters, it requires no long straight pipe runs for installation, enabling flexible mounting in compact spaces.
High Precision and Stability
Boasts excellent accuracy (typically ±0.1% to ±0.5% of reading) and repeatability (±0.02% to ±0.1% of reading), complying with international standards such as ISO 9104 and ASTM D5125. The measurement performance remains stable even under extreme operating conditions (high temperature, high pressure, high viscosity).
Wide Media and Application Compatibility
Suitable for measuring liquids (including high-viscosity fluids like crude oil and adhesives), gases, multi phase flows (e.g., liquid with entrained bubbles), and slurries (e.g., mineral slurries, food pastes). Applicable to industries such as oil and gas, chemical, food and beverage, pharmaceutical, and wastewater treatment.
Digital Signal Processing Adopts advanced digital transmitters with built-in adaptive filtering and signal processing algorithms. These algorithms suppress external vibration interference, enhance signal-to-noise ratio, and enable real-time data output (e.g., 4–20 mA, HART, Modbus, Profibus) for seamless integration with industrial control systems.
Post time: Dec-21-2025