Overview
The EPRO PR6424/000-130 is a 10 mm eddy current proximity probe designed for non-contact measurement of shaft movement in rotating machinery. When paired with the CON021 signal converter, it provides measurement signals for radial vibration, axial displacement, shaft eccentricity, and rotational speed. Its 2 mm linear measurement range and high-temperature operating capability support continuous machinery condition monitoring.
Measurement Functions
The PR6424/000-130 uses eddy current technology to detect changes in the distance between the probe tip and a conductive shaft surface. The probe converts these changes into an electrical signal proportional to target displacement. Furthermore, the CON021 converter conditions the sensor signal and provides an output for connection to a machinery monitoring system.
The measurement arrangement supports several monitoring functions:
- Radial shaft vibration measurement.
- Axial shaft displacement monitoring.
- Shaft eccentricity measurement.
- Rotational speed detection.
Probe Technical Specifications
| Parameter | Specification |
|---|---|
| Model | PR6424/000-130 |
| Brand | EPRO |
| Product Type | Eddy Current Proximity Sensor |
| Sensor Type | Eddy Current Displacement Probe |
| Probe Diameter | 10 mm |
| Linear Measurement Range | 2 mm |
| Initial Air Gap | 1.3 mm |
| Output Scale Factor | 8 V/mm +/-5% (0-45 deg C) |
| Linearity | +/-0.025 mm (0-45 deg C) |
| Minimum Shaft Diameter | 35 mm |
| Operating Temperature | -40 to +150 deg C |
| Protection Rating | IP66 (IEC 60529) |
| Target Material | Ferromagnetic steel |
| Reference Target Materials | 42CrMo4 / AISI 4140 |
CON021 Signal Converter Specifications
The CON021 performs signal conditioning for the eddy current probe. It converts the probe response into an electrical output suitable for machinery monitoring equipment. In addition, its frequency response and rise time define the signal characteristics available to the downstream monitoring system.
| Parameter | Specification |
|---|---|
| Model | CON021 |
| Brand | EPRO |
| Product Type | Eddy Current Signal Converter |
| Function | Signal Conditioning and Conversion |
| Frequency Range | 0-20 kHz (-3 dB) |
| Rise Time | Less than 15 us |
| Supply Voltage | -23 to -32 VDC |
| Output Range | -4 to -20 V |
| Operating Temperature | -30 to +100 deg C |
| Protection Rating | IP20 |
| Housing Material | LMgSi Alloy |
Probe and Converter Configuration
The PR6424/000-130 probe and CON021 converter perform different functions within the measurement chain. The probe detects shaft displacement through eddy current sensing, while the converter conditions the resulting signal for monitoring equipment.
Therefore, the probe and converter should be identified as separate components when checking replacement requirements. The probe’s IP66 protection rating and the converter’s IP20 rating also indicate different enclosure protection levels. The converter requires an installation location that provides suitable protection against dust and moisture.
Frequently Asked Questions
Q: What does the EPRO PR6424/000-130 measure?
A: It supports non-contact measurement of radial vibration, axial displacement, shaft eccentricity, and rotational speed on rotating machinery.
Q: Is the PR6424/000-130 compatible with the CON021 converter?
A: The supplied configuration identifies the PR6424/000-130 probe paired with the CON021 converter. Confirm the complete probe and converter configuration when selecting replacement components.
Q: What is the difference between the IP66 and IP20 protection ratings?
A: The PR6424/000-130 probe has an IP66 rating, while the CON021 converter has an IP20 rating. Therefore, they have different environmental protection requirements and should be installed accordingly.















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