Product Overview

The Emerson PR9268/017-100 is a high-precision electrodynamic velocity sensor engineered for the absolute vibration monitoring of critical rotating machinery. Part of the EPRO product line, this mechanical velocity transducer is specifically designed for low-to-medium frequency measurements on bearing housings, casings, or structural components. Unlike standard accelerometers, the PR9268 series utilizes a moving-coil principle to generate a voltage signal directly proportional to vibration velocity, making it an essential tool for detecting mechanical imbalances, looseness, and misalignment.

This sensor is a primary component within Emerson’s asset reliability ecosystem, frequently integrated with AMS 6500 or MMS 6000 protection systems. Its self-generating design requires no external power for signal production, ensuring high reliability in remote or safety-critical industrial applications.

Technical Specifications

• Manufacturer: Emerson (EPRO Series)

• Model Number: PR9268/017-100

• Measurement Type: Absolute Vibration Velocity

• Operating Principle: Electrodynamic (Moving Coil)

• Frequency Response: 4 Hz to 1,000 Hz (Standard range for velocity monitoring)

• Dynamic Range: Up to 10,000 µm (peak-to-peak)

• Output Signal: Analog Voltage (Proportional to velocity)

• Environmental Protection: IP67 rated (Dust-tight and water-resistant)

• Housing Material: Corrosion-resistant Stainless Steel

• Operating Temperature: Suitable for high-temperature industrial zones

• Weight: 0.74 kg

• Dimensions: 23 x 22 x 3 cm

Key Technical Characteristics

• High Sensitivity at Low Frequencies: Optimized for the 4Hz to 1kHz spectrum, this sensor captures low-frequency mechanical faults that high-frequency accelerometers may overlook, such as structural resonance or slow-speed shaft issues.

• Ruggedized Industrial Design: The stainless steel, hermetically sealed enclosure allows for continuous deployment in environments characterized by extreme moisture, steam, and mechanical shocks.

• Passive Signal Generation: As an electrodynamic transducer, it converts mechanical motion into an electrical signal without requiring an external power supply, simplifying field wiring and increasing uptime.

• Versatile Mounting Configurations: Supports various installation methods, including threaded stud mounting for permanent monitoring and magnetic bases for temporary diagnostic surveys.

• Broad System Compatibility: Standardized output ensures the PR9268/017-100 can interface seamlessly with Distributed Control Systems (DCS), PLC analog inputs, and specialized vibration monitors.

Applications

The PR9268/017-100 is predominantly utilized in heavy industry sectors such as power generation, oil and gas, and mining. It is the preferred solution for monitoring:

• Industrial pumps and heavy-duty fans

• Electric motors and gearboxes

• Hydroelectric and steam turbine housings

• Reciprocating compressors