Epro PR9266-12 Velocity Vibration Sensor Industrial
$178.00
$390.00
Deskripsi
Product Overview
The PR9266-12 is a self-generating electrodynamic velocity sensor designed for absolute vibration monitoring in rotating equipment. It directly converts mechanical motion into a proportional electrical signal, eliminating the need for external excitation power.
The sensing principle is based on electromagnetic induction, making it suitable for continuous vibration measurement in turbines, compressors, pumps, electric motors, and gearbox assemblies where stable broadband response is required.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | PR9266-12 |
| Sensor Principle | Electrodynamic velocity transducer |
| Measurement Principle | Electromagnetic induction (velocity proportional output) |
| Sensitivity | ~28.5 mV/mm/s (±5% at 50 Hz, 20 °C, 100 kΩ load) |
| Frequency Response | 4 Hz – 1,000 Hz |
| Usable Vibration Range | Up to ~2 mm peak-to-peak (variant dependent up to ~3 mm) |
| Natural Frequency | ~4.5 Hz (±0.5 Hz) |
| Damping Ratio | ~0.6 at 20 °C, ~0.43 at 100 °C |
| Coil Resistance | ~1,800 Ω ±12% |
| Coil Inductance | Excitation ~75 mH, sensing coil ~62 mH |
| Output Type | AC voltage proportional to vibration velocity |
| Power Requirement | Self-powered (no external supply required) |
| Operating Temperature | -20 °C to +150 °C |
| Storage Temperature | -40 °C to +70 °C |
| Shock Resistance | 10 g continuous, 20 g short-term |
| Protection Rating | IP65 (environment dependent installation) |
| Housing Material | Aluminum alloy (AlMgSiPb) or stainless steel option |
| Cable Type | PTFE insulated, 3 m standard; armored options available |
| Mounting Style | Vertical or horizontal (base plate mounting options) |
| Standards Compliance | API 670, ISO 10817-1, DIN 45670, CE, RoHS |
Engineering Characteristics
-
True velocity measurement eliminates integration drift issues
-
Self-powered operation improves reliability in isolated installations
-
Stable linear response across industrial vibration frequency bands
-
High thermal stability for long-term operation in hot environments
-
Robust mechanical structure designed for harsh vibration zones
Application Scope
-
Steam and gas turbine vibration monitoring
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Compressor casing and shaft vibration detection
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Pump condition and cavitation monitoring
-
Electric motor and generator health assessment
-
Gearbox structural vibration analysis
Installation Notes
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Mounting rigidity directly impacts measurement accuracy
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Recommended installation on rigid, flat metallic surfaces
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Cable shielding required in high electromagnetic interference environments
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Sensor orientation (vertical/horizontal) should match calibration configuration
FAQ
Q1: Does the PR9266-12 require external power?
No. It is a self-generating electrodynamic sensor and operates without external excitation.
Q2: What type of signal does it output?
It produces an analog AC voltage proportional to vibration velocity.
Q3: Can it measure low-frequency vibration?
Yes, with a lower limit of approximately 4 Hz depending on installation conditions.
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