Description

Product Overview

The Emerson epro MMS3120/022-100 is a heavy-duty, dual-channel bearing vibration transmitter designed for the continuous protection and asset management of critical rotating machinery. As a core component of the MMS 3000 transmitter system, this field-mountable unit converts raw dynamic signals from electrodynamic velocity sensors into stabilized analog tracking signals. Engineered to operate under extreme environmental conditions, the MMS3120/022-100 provides essential machine-health telemetry directly to Distributed Control Systems (DCS), Programmable Logic Controllers (PLCs), and predictive diagnostic networks.

Advanced Capabilities and Functional Benefits

• Dual-Channel Transmitter Configuration: Features two entirely separate processing paths that handle inputs from electrodynamic transducers via robust, industrial “Harting” connectors. The system computes true absolute bearing housing vibrations independently for both channels.
• Flexible Measurement Signal Outputs: The transmitter scales raw transducer data into standard proportional industrial outputs. Depending on application requirements, it can output metrics for true vibration velocity, peak-to-peak vibration amplitude (displacement), or automatically track and transmit the maximum calculated value between the two channels.
• Integrated Diagnostics & Dynamic Testing: Each channel features dedicated auxiliary test outputs that provide raw, buffered voltage telemetry ($\pm 10\text{ V}$) proportional to the real-time dynamic input signal. These connection points allow maintenance teams to interface portable data collectors or the MMS 3000 diagnostic suite without interrupting machine protection loops.
• Built-In System Supervision: Features hardware monitoring states that track system health. The transmitter provides distinct hardware logic triggers for an “OK” status flag alongside configurable limit threshold alarms per channel, allowing rapid troubleshooting of field wiring loops or out-of-spec vibration conditions.

Technical Specifications

Industrial Applications

• Heavy-Duty Turbomachinery Protection: Continuous absolute bearing vibration monitoring on steam, gas, and hydro-driven industrial turbines.
• Harsh Field Deployments: Ideal for oil, gas, and petrochemical refining environments where field-mounted equipment must withstand wide ambient temperature fluctuations and mechanical shock.
• Industrial Utility Infrastructure: Monitoring large-scale process air compressors, high-volume induction fans, and industrial fluid centrifuges.
• Predictive Maintenance Data Streaming: Sending scaled 4-20mA telemetry and raw AC waveforms to host diagnostic software to catch premature bearing degradation, unbalance, and structural resonance.