Overview
Configured for non-contact displacement measurement in critical rotating machinery, the EPRO PR6423/01C-030 (PR6423/01C-030 Eddy Current Proximity Sensor) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PR6423/01C-030 |
| Brand | EPRO / Emerson |
| Origin | Industrial Automation Manufacturing Base |
| Weight | Approx. 0.35 kg (including cable) |
| Dimensions | M10 x 1 Thread Housing, 3 m Integral Cable |
| Operating Temp | -35 to +180 deg C (Sensor Tip); -35 to +150 deg C (Cable) |
| Power Consumption | Powered via compatible signal converter (e.g., CON021) |
| Sensor Diameter | 8 mm |
| Measurement Principle | Eddy Current / Electromagnetic Induction |
| Linear Measurement Range | 2 mm (80 mils) |
| Initial Air Gap | 0.5 mm (20 mils) |
| Incremental Scale Factor | 8 V/mm (203.2 mV/mil) +/-5% |
| Linearity Deviation | +/-0.025 mm (+/-1 mil) |
| Standard Target Material | Ferromagnetic steel (42CrMo4) |
| Protection Rating | IP66 |
Process Instrumentation and Signal Conditioning
Designed for industrial rotating equipment monitoring, this sensor utilizes the electromagnetic induction principle to detect variations in distance between the PEEK probe tip and a conductive ferromagnetic target. The sensor actively generates a high-frequency electromagnetic field at its tip, which interacts with the target surface to produce eddy currents. Changes in the physical air gap directly modify the electrical impedance of the oscillator-demodulator circuit. Furthermore, the unit requires a matched EPRO signal converter, such as the CON021, to translate these impedance changes into proportional DC output signals for downstream machinery protection and monitoring architecture.
Frequently Asked Questions
Q: Does the PR6423/01C-030 require a specific initial gap voltage during installation?
A: Yes. Technicians must set an initial air gap of 0.5 mm, which typically corresponds to a median static gap voltage of approximately -10 VDC when operating with the designated signal converter.
Q: Can the integral cable length be modified in the field?
A: No. Altering the 3 m integral PTFE cable length will change the electrical resonant frequency and ruin the factory-calibrated incremental scale factor.
Field Installation Guidelines
Ensure the mounting thread is tapped accurately to M10 x 1 tolerances, and apply appropriate thread-locking compounds if mechanical vibration poses loosening risks. Maintain proper radial and axial clearance from surrounding structural components to prevent parasitic eddy current generation. Route the sensor cable separately from high-voltage power conduits or variable frequency drive cables to minimize electromagnetic interference, and ensure the signal shield is terminated correctly at the monitoring rack. Confirm all terminal connections at the EPRO CON021 signal converter before applying system power.
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