Reliable Vibration Monitoring for Industrial Machinery Systems
The Epro PR9268/300-100 Electric Speed Sensor is designed for precise vibration velocity measurement in industrial equipment monitoring applications. It delivers stable and consistent signal output for evaluating operating conditions in rotating machinery, supporting long-term 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. It is widely used in industrial systems where reliable vibration data and stable measurement behavior are essential for equipment condition evaluation.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Epro |
| Model Number | PR9268/300-100 |
| Product Type | Electric Speed Sensor |
| Measurement Function | Vibration velocity monitoring |
| Operating Principle | Electrodynamic self-generating system |
| Sensitivity | 28.5 mV/mm/s (±5% typical) |
| Frequency Range | 4 Hz – 1000 Hz |
| Natural Frequency | ~4.5 Hz |
| Linearity | < 2% |
| Output Signal | Analog voltage proportional to vibration velocity |
| Measurement Range | ±1500 µm (typical application range) |
| Maximum Acceleration | 10 g continuous / 20 g intermittent |
| Resistance | ~1723 Ω |
| Inductance | ≤ 90 mH |
| Active Capacitance | < 1.2 nF |
| Housing Material | Stainless steel |
| Cable Type | Industrial PTFE-insulated cable |
| Operating Temperature | -20°C to +100°C |
| Protection Class | Industrial sealed design (IP55–IP65 equivalent) |
| Dimensions (Approx.) | 160 × 58 × 28 mm |
| Weight (Approx.) | 0.8–0.9 kg |
Application Areas
Rotating Machinery Monitoring
Used for vibration velocity measurement in motors, compressors, and industrial drive systems.
Turbine Systems
Supports continuous monitoring of mechanical condition in turbine installations.
Pump and Fan Systems
Helps evaluate operational stability and vibration trends in fluid and air handling equipment.
Power Generation Facilities
Applied in equipment monitoring systems for stable operational assessment.
Process Industry Equipment
Suitable for industrial environments requiring continuous machinery condition monitoring.
Key Advantages
Stable Measurement Output
Provides consistent vibration velocity signals for long-term monitoring applications.
Self-Powered Operation
No external excitation required, simplifying installation and system design.
Durable Industrial Construction
Designed for continuous operation in demanding industrial environments.
Easy System Integration
Compatible with standard industrial monitoring systems and configurations.
Long Service Stability
Supports extended operational cycles with reliable measurement performance.
Wide Application Coverage
Suitable for multiple types of rotating machinery and industrial systems.
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 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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