EPRO pr6423 / 000-040 Eddy Current Proximity Sensors

Configured for radial and axial shaft vibration and position monitoring in turbomachinery protection systems, the EPRO PR6423/000-040 (PR6423 Eddy Current Sensor) provides direct physical/electrical execution. The 8 mm non-contact probe detects mechanical surface displacement of rotating elements and converts target clearance variations into proportional high-frequency electromagnetic impedance shifts evaluated by an external driver or signal converter.

Hardware Specifications

Rotor Dynamics & Eddy-Current Probe Scaling

The system utilizes high-frequency electromagnetic coupling to achieve sub-micron dynamic displacement resolution across high-speed rotating shafts. Accurate eddy-current probe scaling requires impedance matching to specific target material characteristics and system driver excitation frequencies. Field bias validation relies on gap voltage validation (-10 VDC targets) measured at the signal converter output to ensure operational placement at the center of the linear voltage sweep. Proper orthogonal mounting geometry ensures cross-talk suppression between adjacent radial X-Y probe pairs deployed within machine bearing housings.

Frequently Asked Questions

Q: What power supply range is required for the signal converter driving the PR6423 sensor?

A: The signal converter operates on a supply voltage range of -23 VDC to -32 VDC to deliver an output signal range of -4 VDC to -20 VDC, or an alternative supply of -21 VDC to -32 VDC for an output range of -2 VDC to -18 VDC.

Q: What termination type is used for the sensor signal cable connection?

A: The transducer interface utilizes a self-locking Lemo-plug connector, while field signal output and power supply connections utilize screw-type terminal blocks accepting conductors up to 1.5 mm2 with wire-end sleeves.

Q: What is the dynamic response speed of the transducer system loop?

A: The system provides a frequency response range from 0 to 20,000 Hz (-3 dB bandwidth) with a transient response rise time of less than 15 us.

Field Installation Guidelines

• Mechanical Fastening: Secure the housing using the provided four M5x20 mounting screws, ensuring flat surface contact to preserve IP20 enclosure integrity.
• Connector Engagement: Insert the self-locking Lemo-plug fully into the sensor interface until the mechanical lock latches; do not rotate the plug during insertion to avoid pin shear.
• Field Wiring Termination: Strip target wire leads to the appropriate ferrule length, install wire-end sleeves, and torque screw terminals up to the 1.5 mm2 wire limit to maintain low contact resistance.
• Grounding and Shielding: Connect signal cable shielding to the designated system ground point at one end only to prevent ground loops and high-frequency noise injection.