EPRO MMS3210/021-000 Dual Shaft Displacement Transmitter

Overview

The EPRO MMS3210/021-000 is a dual-channel shaft displacement and axial position transmitter engineered for continuous monitoring of critical rotating machinery. As part of the MMS3000 monitoring platform, it converts raw eddy current sensor signals into stable, industry-standard outputs for protection and condition monitoring systems.

Designed for installation directly at the machine, this transmitter integrates sensor signal conditioning, digital supervision, and redundant power inputs to ensure dependable operation in high-demand turbomachinery environments.

Core Functions

The MMS3210/021-000 processes two independent non-contact displacement signals simultaneously, enabling precise measurement of:

• Relative shaft vibration

• Static and dynamic shaft displacement

• Axial shaft position and thrust movement

The module is suitable for both protection and diagnostic purposes and is fully aligned with API 670 requirements for machinery monitoring systems.

Technical Specifications

Key Engineering Features

• Dual-channel architecture allows independent monitoring of two shaft measurement points

• Integrated signal conversion eliminates the need for external conditioning modules

• Redundant power supply design enhances system availability and fault tolerance

• Internal microcontroller performs continuous health diagnostics of sensors and electronics

• Supports external converters for use in hazardous or explosion-protected areas

• Fully compatible with MMS3000 rack and standalone installations

Typical Applications

The EPRO MMS3210/021-000 is commonly deployed in machinery where shaft behavior is safety-critical, including:

• Steam and gas turbines

• Centrifugal and axial compressors

• Large pumps and motor-driven equipment

• Gearboxes and turbo-expanders

• Power generation and petrochemical rotating assets

MMS3210 Series Comparison

Within the MMS3210 family, the 021-000 variant is optimized for standard dual-channel displacement and position monitoring with API 670 compliance. Other MMS3210 configurations may differ in output scaling, hazardous-area support, or system integration options, while sharing the same core measurement technology.

FAQ

What sensors can be used with the MMS3210/021-000?

The transmitter is designed for use with EPRO PR6422 to PR6426 eddy current probes, covering a wide range of shaft diameters and measurement ranges.

Can the module be used for machinery protection systems?

Yes. When integrated into a compliant monitoring architecture, the MMS3210/021-000 fulfills API 670 requirements and is suitable for protection and shutdown systems.

Is redundant power mandatory?

The module supports two independent 24 V DC inputs. Redundancy is recommended for critical applications but not mandatory for operation.