Description
The Epro PR6423-003-010 (often designated as PR6423/003-010) is a high-precision, non-contact Eddy Current Proximity Transducer / Displacement Sensor manufactured by Epro GmbH (now part of Emerson Process Management / AMS Reliability).
Engineered for continuous machine condition monitoring and API 670 machinery protection systems, the PR6423 sensor non-contactually measures shaft position and dynamic movement on critical turbomachinery—including steam and gas turbines, centrifugal compressors, large pumps, and industrial gearboxes.
Technical Specifications
| Parameter | Specification |
| Manufacturer | Epro GmbH (Emerson Process Management / AMS) |
| Product Line | PR6423 Series Non-Contact Proximity Transducers |
| Part / Ordering Code | PR6423-003-010 (PR6423/003-010) |
| Transducer Type | Eddy Current Proximity Probe |
| Tip Diameter | 8 mm |
| Linear Measuring Range | Approx. 2.0 mm (0.08 in) standard range |
| Target Material | Ferromagnetic steel (Standard calibration: 42CrMo4 / AISI 4140) |
| Sensitivity | 8.0 V/mm (approx. 200 mV/mil) when paired with matching signal converter |
| Operating Temperature (Sensor Head) | -35°C to +180°C (-31°F to +356°F) |
| Signal Converter Compatibility | Epro CON011, CON021, CON041 Series Signal Conditioners |
| Enclosure / Protection Class | IP68 (probe tip and stainless steel sensor body) |
Core Features & Operating Capabilities
- Non-Contact Precision Measurement: Measures micro-inch movement without physical mechanical wear, providing continuous feedback for relative shaft vibration (radial), axial position (thrust wear), and speed/phase reference (Keyphasor).
- API 670 Compliance: Designed to fulfill API 670 guidelines for machinery protection systems regarding frequency response, linearity, and temperature stability.
- Ruggedized Construction: Features a stainless steel body and ceramic tip construction built to withstand high oil pressure, hot oil vapor, and harsh thermal cycles inside turbine bearing pedestals.
- Seamless Transmitter Integration: Connects directly via extension cable to Epro CON011 / CON021 signal converters, outputting standardized 0–24 V or 4–20 mA signals to host DCS or MMS6000 protection racks.
Related Epro / Emerson Condition Monitoring Components
- CON011 / CON021 — Epro Signal Converters / Drivers for PR6423 Sensors.
- MMS6110 / MMS6120 — MMS6000 System Dual-Channel Shaft Vibration & Displacement Conditioners.
- PR6422 / PR6424 — 5 mm and 12 mm Tip Diameter Eddy Current Sensors.
- Kable / Extension Cables — Epro low-capacitance armored extension cables.
