EMERSON MMS 6220 Eccentricity monitor

Overview

The MMS 6220 Eccentricity Monitor from Emerson’s EPRO MMS 6000 series is a dual-channel monitoring solution designed to detect and measure shaft eccentricity in rotating machinery. By identifying misalignment between the shaft’s geometric center and its rotation center, it provides early warnings to prevent unbalanced forces, mechanical damage, and costly downtime. Although discontinued on December 31, 2018, brand-new units remain available for legacy installations and replacement needs.

Technical Specifications

Functional Role

The MMS6220 monitor provides dual-channel shaft eccentricity measurement, allowing simultaneous monitoring of two independent points for enhanced accuracy in complex machinery. Compatible with eddy current sensors, it delivers precise data for real-time diagnostics and predictive maintenance. Configurable alarm thresholds ensure immediate operator alerts when eccentricity exceeds safe limits, while its rugged design guarantees reliable performance in harsh industrial environments.

Application Scenarios

• Power generation plants monitoring turbine shaft eccentricity

• Oil & gas facilities requiring continuous machinery health diagnostics

• Manufacturing industries implementing predictive maintenance strategies

• Legacy MMS 6000 installations needing replacement eccentricity monitors

Advantages

• Dual-channel capability for monitoring multiple shaft points

• High-accuracy detection of eccentricity and misalignment

• Rugged design withstands vibration, dust, and extreme temperatures

• Seamless integration with DCS systems for real-time monitoring

• Configurable alarms for immediate fault detection

• Supports predictive maintenance to reduce downtime and extend equipment life

FAQ

Q: Is the MMS 6220 still supported by Emerson? A: Official support ended after discontinuation in 2018, but brand-new replacement units remain available.

Q: Can this monitor be used outside MMS 6000 systems? A: It is optimized for Emerson EPRO MMS setups; compatibility with other systems may require additional interface modules.

Q: What alternatives exist for new installations? A: Emerson recommends newer-generation eccentricity monitoring modules with extended lifecycle support and enhanced diagnostics.