Epro MMS3120/022-000 Bearing Vibration Transmitter

Product Overview

The MMS3120/022-000 is a dual-channel bearing vibration monitoring module from Epro, part of the Emerson MMS 3000 platform. It is developed for continuous condition monitoring of rotating equipment, providing reliable measurement of bearing vibration using multiple sensing technologies.

This unit supports electrodynamic velocity sensors and piezoelectric accelerometers, allowing flexible deployment across different machinery types and measurement requirements. It is commonly used in protection systems where accurate vibration trending and alarm signaling are essential.

Measurement Capability

The transmitter processes vibration signals from two independent channels, enabling simultaneous monitoring of separate bearing locations. It supports multiple vibration parameters including velocity, acceleration, and peak displacement, offering a comprehensive view of machine condition.

Advanced internal signal processing ensures stable measurement results, even under fluctuating operating conditions.

Technical Specifications

Model: MMS3120/022-000
Manufacturer: Epro (Emerson MMS 3000 Series)
Product Type: Dual Channel Bearing Vibration Transmitter

Measurement Inputs:

• 2 independent vibration channels

• Compatible with electrodynamic velocity sensors (PR9268 series)

• Compatible with piezoelectric vibration sensors

Measured Parameters:

• Vibration velocity

• Vibration acceleration

• Peak displacement

Output Signals:

• Configurable analog outputs (0/4–20 mA)

• Multiple configurable function or relay outputs

Power Supply: Dual redundant 24 V DC inputs
Signal Processing: Microcontroller-based with digital filtering and diagnostics
Diagnostics: Continuous sensor monitoring, signal integrity checks, internal system supervision

Mechanical Data:

• Dimensions: 127.5 × 125.75 × 80 mm

• Weight: 1.3 kg

Installation: Suitable for direct mounting on machinery or integration into control cabinets
Environmental Design: Rugged housing for industrial environments with vibration and temperature exposure
Compliance: API 670 and related international vibration monitoring standards
Origin: Germany

Key Features

• Dual-channel architecture for monitoring two bearing points simultaneously

• Broad sensor compatibility with velocity and piezoelectric technologies

• Multi-parameter measurement including velocity, acceleration, and displacement

• Integrated diagnostics for improved fault detection and maintenance planning

• Redundant power supply for high system availability

• Compact mechanical design suitable for field installation

Application Areas

• Steam and gas turbines

• Compressors and expanders

• Industrial pumps and motors

• Power generation equipment

• Critical rotating machinery requiring continuous vibration supervision

FAQ

What types of sensors can be connected to this device?
It supports PR9268 electrodynamic velocity sensors as well as standard industrial piezoelectric accelerometers.

Can it measure more than one vibration parameter?
Yes, it provides velocity, acceleration, and peak displacement measurements within the same unit.

Are the two channels independent?
Yes, both channels operate independently, allowing monitoring of two separate bearing locations.

Is it compliant with API 670 requirements?
Yes, the unit is designed to meet API 670 standards for machinery protection systems.

Does it require additional hardware for hazardous areas?
Yes, installation in hazardous zones may require certified external barriers or signal converters.