Precision Vibration Monitoring for Critical Industrial Machinery
The Epro PR9268/200-000 Electrodynamic Velocity Sensor is designed for accurate measurement of absolute vibration velocity in industrial rotating machinery systems. It provides stable and repeatable output signals for evaluating mechanical condition, supporting predictive maintenance and long-term operational reliability.
Based on an electrodynamic self-generating principle, the sensor converts mechanical vibration directly into proportional electrical signals without requiring external power. It is widely used in turbine systems, compressors, pumps, and other critical rotating equipment where continuous vibration monitoring is essential.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Epro |
| Model Number | PR9268/200-000 |
| Product Type | Electrodynamic Velocity Sensor |
| Measurement Function | Absolute vibration velocity monitoring |
| Operating Principle | Electrodynamic (coil-magnet induction system) |
| Sensitivity | 17.5 mV/mm/s (±5%) |
| Frequency Range | 14 Hz – 1000 Hz |
| Natural Frequency | 4.5 Hz ± 0.75 Hz |
| Linearity | < 2% |
| Output Signal | Analog voltage proportional to vibration velocity |
| Maximum Acceleration | 10 g continuous / 20 g intermittent |
| Transverse Sensitivity | < 0.1 |
| Electrical Resistance | ~1723 Ω ±10% |
| Inductance | ≤ 90 mH |
| Active Capacitance | < 1.2 nF |
| Housing Material | Stainless steel |
| Mounting Type | Threaded industrial mounting |
| Operating Temperature | -20°C to +100°C |
| Protection Class | IP65 (industrial sealed design) |
| Dimensions (Approx.) | 160 × 58 × 28 mm |
| Weight (Approx.) | 0.74 – 0.93 kg |
Application Areas
Turbine Monitoring Systems
Used for vibration analysis in steam, gas, and hydro turbines to ensure stable operation.
Compressor Units
Supports condition monitoring in industrial air and gas compression systems.
Pumping Systems
Helps evaluate vibration trends and detect mechanical imbalance or misalignment.
Power Generation Facilities
Applied in continuous monitoring systems for generators and rotating machinery.
Industrial Process Equipment
Suitable for heavy-duty industrial environments requiring stable vibration diagnostics.
Key Advantages
High Signal Stability
Delivers consistent vibration velocity output for long-term monitoring reliability.
Self-Powered Design
No external excitation required, reducing system complexity.
Industrial-Grade Durability
Engineered for harsh operating environments and continuous use.
Easy Integration
Compatible with standard vibration monitoring and protection systems.
Proven Field Performance
Widely used in critical rotating machinery across industrial sectors.
Long Service Life
Designed for stable operation with minimal performance drift over time.
Technical FAQs
1. What is the main function of this sensor?
It measures absolute vibration velocity in industrial machinery.
2. What technology does it use?
It uses an electrodynamic self-generating induction principle.
3. Does it require external power?
No, it operates without external power supply.
4. What equipment is it used with?
It is commonly used with turbines, compressors, pumps, and motors.
5. What type of signal does it output?
It outputs an analog voltage 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 monitoring?
Yes, it is designed for continuous industrial monitoring.
8. What industries use this model?
Power generation, oil & gas, petrochemical, and manufacturing industries.
9. What is its protection rating?
It is typically rated IP65 for industrial environments.
10. Why is this model widely used?
Because it provides stable, reliable, and maintenance-friendly vibration measurement for critical machinery.
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