Overview
The EPRO PR6423/10R-030, also identified by the base model PR6423, is an 8 mm eddy current proximity sensor designed for non-contact displacement measurement in rotating machinery monitoring systems. It detects changes in the electromagnetic field between the probe tip and conductive target, producing a displacement-related signal for shaft vibration, position, and clearance monitoring.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PR6423/10R-030 |
| Brand | EPRO |
| Product Type | Eddy Current Proximity Sensor |
| Sensor Series | PR6423 |
| Measurement Principle | Eddy current displacement measurement |
| Sensor Tip Diameter | 8 mm |
| Mounting Thread | M10 x 1 (provided configuration data) |
| Measurement Range | 2 mm (provided configuration data) |
| Static Measurement Range | +/- 1.0 mm (provided configuration data) |
| Initial Air Gap | 0.5 mm (provided configuration data) |
| Incremental Scale Factor | 8 V/mm (provided configuration data) |
| Scale Factor Tolerance | +/- 5% (provided configuration data) |
| Linearity Deviation | +/- 0.025 mm (provided configuration data) |
| Target Material | Ferromagnetic steel |
| Cable Length | 0.3 m (provided configuration data) |
| Operating Temperature | -35 to +180 deg C (configuration-dependent; verify exact assembly) |
| Protection Rating | IP66 / IP67 (provided configuration data) |
| Sensor Tip Material | PEEK (provided configuration data) |
| Housing Material | Stainless steel (provided configuration data) |
| Cable Jacket | PTFE (provided configuration data) |
| Power Consumption | Not specified; sensor requires a compatible signal converter |
| Weight | 0.18 kg |
| Dimensions | 17 x 17 x 2 cm (estimated shipping dimensions) |
Eddy Current Measurement and Signal Conditioning
The PR6423 sensor operates through electromagnetic coupling between its sensing coil and a conductive target. As the shaft moves relative to the probe, the electrical characteristics of the sensing circuit change.
A compatible signal converter processes these changes into a displacement-related output. Consequently, the complete measurement chain requires compatible probe, extension cable, and converter specifications.
For machinery monitoring, verify the following parameters before commissioning:
- Probe sensitivity and converter scaling.
- Initial probe-to-target clearance.
- Target material and surface condition.
- Cable and connector compatibility.
- Signal polarity and measurement reference.
- Electrical interference and cable shielding.
The stated 8 V/mm scale factor and 2 mm measurement range should be confirmed against the applicable EPRO documentation for the exact assembly.
Frequently Asked Questions (FAQ)
Q: What physical parameter does the PR6423/10R-030 measure?
A: It measures non-contact displacement between the sensor tip and a conductive target. The resulting signal supports shaft vibration and position monitoring.
Q: Can the PR6423/10R-030 operate without a signal converter?
A: The probe forms part of an eddy current measurement system. A compatible signal converter is required to condition the sensor signal for monitoring equipment.
Q: What should be checked before replacing an existing PR6423 sensor?
A: Verify the complete model designation, mounting arrangement, cable termination, converter compatibility, measurement range, and calibration characteristics before installation.
Field Installation Guidelines
- Confirm the installed probe model and mechanical mounting arrangement before removing the existing sensor.
- Inspect the probe tip, cable jacket, connector, and mounting threads for physical damage.
- Install the sensor using the specified mounting hardware and mechanical clearance requirements.
- Maintain separation between sensor cables and high-voltage or high-current conductors to reduce electromagnetic interference.
- Connect the cable shield according to the monitoring system grounding design.
- Verify probe clearance and signal conditioning against the applicable system documentation.
- Confirm stable displacement readings before returning the machinery monitoring channel to service.
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