Epro PR6423/000-030-CN+CON021 8mm Eddy Current Sensor

Product Introduction

The Epro PR6423/000-030-CN+CON021 8 mm Eddy Current Sensor is a high-precision proximity probe designed for continuous, non-contact measurement of shaft vibration, radial displacement, and rotor position in rotating machinery. Built to withstand harsh industrial conditions, this sensor uses the eddy-current principle to detect changes in the distance between the probe tip and a conductive target. The result is a reliable output signal proportional to displacement, enabling predictive maintenance and protection of turbines, compressors, pumps, and other critical equipment. Its rugged construction and high sensitivity make it suitable for long-term use in power generation, petrochemical, and heavy-duty process industries.

Technical Specifications

Applications

The PR6423 series is engineered for demanding industrial environments:

• Turbomachinery monitoring: Gas turbines, steam turbines, and compressors for real-time rotor vibration detection.

• Predictive maintenance: Early fault detection in rotating shafts, bearings, and couplings.

• Process industry equipment: Pumps, motors, and gearboxes operating under high vibration or thermal stress.

• Power generation plants: Continuous protection of generator shafts and rotors.

• Petrochemical and refinery systems: Reliable displacement measurement in explosive or corrosive atmospheres when used with appropriate protection.

Advantages

• High Measurement Accuracy: Linear and repeatable output ensures precise vibration monitoring.

• Robust Construction: Stainless steel housing and hermetic sealing resist moisture, oil, and dust.

• Wide Temperature Capability: Withstands extreme ambient conditions, ensuring stable operation.

• Easy Integration: Standardized output signals simplify connection to DCS or PLC systems.

• Low Maintenance: Non-contact design eliminates mechanical wear.

• Flexible Installation: Available with various cable lengths and compatible with multiple proximitor modules.

FAQ

1. What principle does the PR6423 sensor use for displacement measurement?
   It operates on the eddy current principle, inducing currents in the conductive target and measuring impedance changes to determine distance.

2. Can the sensor be used in high-temperature environments?
   Yes, the probe operates up to +180 °C and the CON021 converter up to +85 °C.

3. What is the typical linear measurement range?
   The standard linear range is 0 – 2 mm with factory calibration.

4. How is the sensor powered?
   It is powered through the CON021 converter with a ±15 V DC supply.

5. Does the sensor require regular calibration?
   Calibration is recommended during installation and major maintenance, but frequent recalibration is not needed thanks to stable factory settings.

6. What type of output signals are supported?
   The system provides a voltage or 4–20 mA current output proportional to displacement.

7. Is the probe tip resistant to oil or chemical exposure?
   Yes, the stainless steel and ceramic construction provides strong resistance to oil, lubricants, and most industrial chemicals.

8. Can the PR6423 be used for both vibration and shaft position monitoring?
   Absolutely; it can monitor both dynamic vibration and static radial displacement.

9. What is the recommended installation clearance from the target?
   Typically around 1 mm nominal gap to ensure the full measurement range and linearity.

10. Is the sensor suitable for hazardous areas?
    Yes, when paired with appropriate intrinsically safe barriers or certified CON021 modules, it meets ATEX/IECEx requirements.

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