High-Stability Vibration Monitoring for Industrial Machinery Systems
The Epro PR9268/301-000 Electrodynamic Velocity Sensor is designed for accurate and stable vibration velocity measurement in industrial monitoring applications. It is widely used for evaluating the operating condition of rotating machinery, supporting long-term equipment performance assessment and condition-based maintenance strategies.
Based on an electrodynamic self-generating principle, the sensor converts mechanical vibration into proportional electrical signals without requiring external power. Its robust design and stable output characteristics make it suitable for continuous monitoring in demanding industrial environments.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Epro |
| Model Number | PR9268/301-000 |
| Product Type | Electrodynamic Velocity Sensor |
| Measurement Function | Vibration velocity monitoring |
| Operating Principle | Electrodynamic self-generating system |
| Sensitivity | 17.5 – 28.5 mV/mm/s (typical range) |
| Frequency Range | 4 Hz – 1000 Hz |
| Natural Frequency | ~4.5 Hz |
| Linearity | < 2% |
| Output Signal | Analog voltage proportional to vibration velocity |
| Measurement Range | Up to ±1500 µm (typical application range) |
| Maximum Acceleration | 10 g continuous / 20 g intermittent |
| Transverse Sensitivity | < 0.1 |
| Resistance | ~1723 Ω |
| Inductance | ≤ 90 mH |
| Active Capacitance | < 1.2 nF |
| Housing Material | Stainless steel |
| Mounting Type | Threaded industrial mounting |
| Cable Type | Industrial PTFE or armored cable |
| Operating Temperature | -20°C to +100°C |
| Protection Class | IP55–IP65 (depending on configuration) |
| Dimensions (Approx.) | 160 × 58 × 28 mm |
| Weight (Approx.) | 0.8–0.93 kg |
Application Areas
Rotating Machinery Monitoring
Used for vibration velocity measurement in motors, compressors, and industrial drive systems.
Turbine Systems
Supports continuous monitoring of operating conditions in steam, gas, and hydro turbine systems.
Pump and Fan Systems
Helps evaluate mechanical stability and operational trends in fluid and air handling equipment.
Power Generation Facilities
Applied in monitoring systems for equipment performance evaluation and operational consistency.
Process Industry Equipment
Suitable for industrial environments requiring continuous machinery condition monitoring.
Key Advantages
Stable Measurement Performance
Provides consistent vibration velocity signals for long-term monitoring applications.
Self-Powered Operation
No external excitation required, simplifying system integration and installation.
Rugged Industrial Design
Built for continuous operation in harsh and demanding industrial environments.
Easy Integration
Compatible with standard industrial vibration monitoring systems.
Long Service Stability
Supports extended operational cycles with consistent measurement behavior.
Wide Application Coverage
Suitable for multiple types of rotating machinery and process equipment.
Technical FAQs
1. What is the main function of this sensor?
It measures vibration velocity for industrial equipment condition monitoring.
2. What technology does it use?
It uses an electrodynamic self-generating sensing principle.
3. Does it require external power?
No, it operates without external power supply.
4. What equipment is it commonly used with?
It is used with turbines, compressors, pumps, and industrial motors.
5. What type of signal does it output?
It provides an analog voltage signal proportional to vibration velocity.
6. What is the operating temperature range?
It operates between -20°C and +100°C.
7. Is it suitable for continuous operation?
Yes, it is designed for continuous industrial monitoring.
8. What parameters does it measure?
It measures vibration velocity and equipment operating conditions.
9. What industries commonly use this model?
Power generation, manufacturing, utilities, and process industries.
10. Why is this model widely used?
Because it offers stable performance, durable construction, and reliable measurement output.
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