Epro PR9268/206-100 Electrodynamic Velocity Sensor

The Epro PR9268/206-100 is a high-performance electrodynamic velocity sensor tailored for industrial applications requiring precise and reliable vibration monitoring. As part of the Epro PR9268 series, this model is specifically designed to measure vibration velocity in machinery, helping to detect early signs of wear, misalignment, imbalance, or bearing failure.

The sensor operates on the electrodynamic principle, delivering an analog voltage signal proportional to the vibration velocity of the equipment to which it is mounted. Unlike piezoelectric sensors, the PR9268/206-100 requires no external power source, simplifying installation and long-term maintenance.

This model offers optimized frequency response and mechanical ruggedness, making it suitable for harsh environments including power generation, steel production, oil & gas refining, and heavy machinery industries. Its stainless-steel housing, excellent shock resistance, and high ingress protection rating ensure long-lasting, dependable performance even in aggressive operating conditions.

Technical Specifications

Product Applications

• Steam and Gas Turbines

  Monitors axial and radial vibration in rotating components to prevent catastrophic failure.

• Industrial Fans and Blowers

  Identifies vibration due to blade imbalance, looseness, or mechanical resonance.

• Pumps and Compressors

  Detects early-stage cavitation, impeller misalignment, or mechanical degradation.

• Steel Rolling Mills

  Ensures proper machine performance under high-load environments.

• Cement and Mining Equipment

  Measures equipment health in crushers, ball mills, and conveyor systems.

• HVAC and Power Distribution Units

  Monitors motor health to avoid unplanned downtime in critical systems.

Product Advantages

• High Output Sensitivity

  The 28 mV/mm/s sensitivity provides excellent resolution for low-level vibration signals.

• Passive Sensor Design

  No external power supply required, reducing complexity and points of failure.

• Rugged Construction

  Stainless steel enclosure with high shock and vibration resistance ensures long-term performance.

• Ingress Protection IP67

  Sealed against dust and water ingress for outdoor or washdown area usage.

• Standardized Connector & Mounting Interface

  Facilitates quick and reliable installation and replacement with minimal training.

• Broad Compatibility

  Easily integrates with condition monitoring and protection systems from multiple vendors.

• Wide Temperature and Shock Range

  Performs reliably in extreme industrial conditions.

Frequently Asked Questions (FAQ)

1. What is the sensing principle of the PR9268/206-100?

   It operates on the electrodynamic principle, converting mechanical vibration into an electrical voltage signal.

2. Does the sensor require external power?

   No, it is a passive device and functions without external excitation.

3. Is the PR9268/206-100 suitable for outdoor use?

   Yes, with an IP67 protection rating, it is fully sealed for outdoor and industrial environments.

4. Can this sensor be used in high-shock environments?

   Absolutely, it is rated for shock levels up to 5000 g.

5. What is the connector type?

   The standard model uses a 2-pin MIL-C-5015 connector, either axial or radial.

6. What cable types are compatible with this sensor?

   Shielded twisted pair cables are recommended; armored versions are available for rugged use.

7. Can this sensor be mounted in any orientation?

   While it supports various orientations, optimal sensitivity is along the longitudinal axis of the housing.

8. What is the typical application for this sensor in power plants?

   It is commonly mounted on turbine casings to monitor vibration velocity.

9. Is this sensor compatible with Epro’s CON021 or MMS systems?

   No, the PR9268 series is typically connected directly to analog monitoring systems, not via eddy current sensor interfaces like CON021.

10. How frequently does the sensor require maintenance?

    Under normal industrial usage, the sensor requires virtually no maintenance thanks to its sealed design.