Description
Overview
The EPRO PR6423/001‑011 is a high-precision, non-contact eddy current proximity sensor engineered for advanced shaft monitoring in turbomachinery. Featuring an 8 mm probe and robust stainless steel housing, this sensor delivers accurate measurement of vibration, radial and axial displacement, and eccentricity. Its design ensures reliability in harsh industrial environments and compatibility with API 670-compliant machine protection systems.
Applications
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Radial and axial shaft displacement and vibration monitoring
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Steam turbines, gas turbines, compressors, pumps, and industrial fans
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Integration with API 670 machine protection systems
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Compatible with CON011, CON021, CON031, CON041 converters and AMS 3000 series monitoring modules
Key Advantages
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Extended Measurement: 8 mm sensor head allows ranges of 0–2 mm, extendable to ~3 mm depending on converter configuration
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Non-Contact Design: Eliminates mechanical wear, providing long-term stability and low maintenance
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High Accuracy: Static accuracy ≤ ±1.5%, wide dynamic frequency response up to 10 kHz
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Rugged Construction: Stainless steel housing with armored cable suitable for extreme temperatures and pressures
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Flexible Integration: Works seamlessly with multiple converters and monitoring modules
Technical Specifications
| Specification | Details |
|---|---|
| Sensor Head Diameter | 8 mm |
| Measuring Range | 0–2 mm (extendable to ~3 mm with converter) |
| Sensitivity | 8 V/mm (≈203.2 mV/mil) |
| Frequency Range | 0–10 kHz (–3 dB) |
| Nominal Air Gap | ~1.0 mm |
| Static Accuracy | ≤ ±1.5% |
| Dynamic Accuracy | High fidelity for shaft vibration analysis |
| Target Material | Ferromagnetic steel (42CrMo4 standard) |
| Max Shaft Surface Speed | 2,500 m/s (~9.8×10⁴ ips) |
| Minimum Shaft Diameter | ≥ 20 mm |
| Operating Temperature | –35 °C to +180 °C |
| Short-Term Excursion | Up to 200 °C (<4 hours) |
| Max Cable Temperature | 200 °C |
| Pressure Resistance | 10,000 hPa (145 psi) |
| Shock Resistance | 5 g @ 60 Hz |
| Cable Length Options | 5–10 m (depending on variant) |
| Certification | ATEX approved |
FAQ
Q: Can the PR6423/001‑011 be used with smaller shafts?
A: Yes, it supports shafts ≥20 mm in diameter.
Q: Which converters are compatible?
A: CON011, CON021, CON031, CON041 and AMS 3000 series modules.
Q: How does it compare to PR6422 sensors?
A: PR6423 series provides a larger measuring range (8 mm head) and better performance for higher displacement shafts compared to the 5 mm PR6422 sensors.
Features
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